> ## Documentation Index > Fetch the complete documentation index at: https://docs.blinkops.com/llms.txt > Use this file to discover all available pages before exploring further. # Dynamic Variables > Dynamic variables are variables that are generated during workflow execution. These variables enable workflows to adapt to real-time data, allowing workflows to function dynamically rather than relying on inputs that contain static values. They can represent various types of data, including metadata, user input, step outputs, or event payloads. To simplify the process of selecting and using dynamic variables, Blink provides the [Variable Picker](#using-the-variable-picker-to-add-dynamic-variables)—a tool that allows users to insert dynamic variables without needing to understand complex expression syntax. ## Dynamic Variables Types
| Dynamic Variable Type | Description | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [Steps](/docs/workflows/building-workflows/steps) | Step-related variables include status, outputs, or results from previous workflow steps. | | [Local variable](/docs/workflows/building-workflows/actions/basic-actions/flow-control-actions#set-variables) | Variables that are created within the workflow using the [Set Variable action](/docs/workflows/building-workflows/actions/basic-actions/flow-control-actions#set-variables) | | [Files](/docs/workflows/building-workflows/files) | Variables that represent files used in the workflow, including file paths, sizes, and identifiers. | | [Global variables](/docs/workflows/building-workflows/dynamic-variables/global-variables) | Variables defined within a Workspace and accessible across the entire workspace. [Global variables](/docs/workflows/building-workflows/dynamic-variables/global-variables) can be *Raw value* or *Secret*. | | [Metadata](/docs/workflows/workflows) | Metadata variables provide workflow-related information:
  1. The name of the current workflow
  2. A link to the current workflow
  3. Theworkflow's ID
  4. The associated workspace's ID
  5. The pack's ID that the workflow belongs to
  6. The current execution ID
  7. A link to the current execution
  8. The timer at which execution began
  9. The email of the user who started the execution
  10. Groups the current user is a member of
| | [Input Parameters](/docs/workflows/building-workflows/triggers/on-demand-triggers/input-parameters)- Only available in [On-demand workflows](/docs/workflows/building-workflows/triggers/on-demand-triggers/on-demand-triggers) | These are values defined when triggering an [On-demand workflow](/docs/workflows/building-workflows/triggers/on-demand-triggers/on-demand-triggers). | | [Event payload](/docs/workflows/building-workflows/triggers/event-based-triggers/webhooks)- Only available in [Event-based workflows](/docs/workflows/building-workflows/triggers/event-based-triggers/event-based-triggers) | This refers to the data received from the triggering event in an [Event-based workflows](/docs/workflows/building-workflows/triggers/event-based-triggers/event-based-triggers). When an event occurs, it generates specific data that is passed into the workflow, enabling it to execute the necessary actions based on the event's details. |
## Adding Dynamic Variables in Workflows There are two distinct ways in which you can add dynamic variables to input parameters throughout Workflows. The Variable Picker allows users to insert dynamic variables easily into workflows without manually writing expressions. It is compatible with all input types. The Dynamic Variables can also be added manually using the [expression language ](/docs/workflows/building-workflows/dynamic-variables/expression-language/workflow-engine-variables) syntax. ### Using the Variable Picker to Add Dynamic Variables **Note**: When using the same dynamic variable in multiple steps with different value types, the variable will always take the value type from the last step where it was set. The first value type will be overwritten by the second one. Click the button in the parameter field where you want to use a variable. In the Variable Picker, type to search for a specific variable. Select the desired variable. It appears in the picker’s headline. The variable tag is displayed in the step's input field. When executed, the workflow replaces the tag with the actual value. *** ## Preview the Values of Dynamic Variables in Steps To quickly inspect a step, click the icon. This opens a view showing all input parameters for that step. In preview mode, you can see the actual values of all dynamic variables used in the step’s input parameters You can view dynamic variables alongside their actual values by clicking the icon in the top-right corner of the text input to enlarge the preview. Then, select the icon to display both the dynamic variables and their corresponding values side by side. From the panel on the left of the expanded preview, you can directly edit the dynamic variables. Any changes you make will instantly update on the right side, allowing you to see in real time how adjustments affect the final output. ## In preview mode, dynamic variables in the [python action](/docs/workflows/building-workflows/dynamic-variables/expression-language/workflow-engine-variables#python-actions) cannot be displayed. You can view input values from other scripting languages ([Bash](/docs/workflows/building-workflows/actions/basic-actions/code-actions#run-bash-script), [PowerShell](/docs/integrations/powershell#powershell), and [Node.js](/docs/workflows/building-workflows/actions/basic-actions/code-actions#run-node-js-script)), but Python- generated dynamic values are not available to preview. ## Referencing a Key in a JSON Object If a workflow step outputs a JSON object, you can reference a specific key: Click the desired key in the JSON output. The value copies to your clipboard. Paste the value into another step where needed.