Flow Control condition
Variable exists
Yes if a variable has a value, for example a field from a form or a webhook.
A check you can use in an If/Else step. Contacts who match go down the Yes path, everyone else goes down No.
All plans
How to add it
- Open Workflows in the app and create or open a workflow.
- Add an If/Else step and pick Variable exists as the condition.
- Fill in its settings, then save and turn the workflow on.
For the API and MCP
When you build workflows through the Inflowave API or the MCP server, this condition is variable_is_set. See the MCP documentation.