I have a document collaboration Flow. It runs when someone moves the field from 'No' to 'Yes'. Then it should send an email and create a task. Here are the parameters and the error.
Do you want to send an email to the Reviewer when a field of the library is set to Yes, and then create a task in Outlook Tasks?
From the screenshot, it seems that the dynamic contents you selected returned null value. Please make sure you have given them a value in the library.
I have made the following test according to your description.
First, create a document library with the columns you mentioned. A Completed column of type choice Yes/No, one Reviewer column of type Person and group, one DueDate column of type Date and time (date only).
Then start the flow with the trigger When a file is created or modified (properties only).
Add a condition to check whether the Completed is equal to Yes with the following code in advanced mode:
Under if yes branch, send an email to Reviewer, create a task to Tasks.
A screenshot for your reference.
Please take another try with it and feel free post back if you are still having the issue.
I put in the logic you suggested (thank you!), but then it wouldn't wait for me to move the field to 'Yes', so changed the logic to send the email even if it isn't going back to the trigger.
Could you share a full screenshot of your flow?
It seems that there is a Do-until loop in your flow. How is the do-until condition configured?
When using Do-until loop, the data is not pulled in from the previous step but instead it is part of the Do-until block itself.
Please share more details on your flow to help reproduce this issue.