Set variable on Uncheck checkbox

[ankku]

I have a Check box where I have kept formulae for Check and OnUncheck as shown in screen shot below

I am trying to pass this variable to a Power Automate defined on click of a button something like this :

But my Power automate fails when I don't check the box and click the button , but succeeds when I check the box and click the button and the value is set to "True" as mentioned in my OnCheck action formulae. It fails to call the Power Automate when the box is unchecked saying the passed parameter value is invalid. What wrong am I doing here??

[v-xiaochen-msft · Accepted solution]

Hi @ankku ,

The error is caused by a mismatch between the data type received by flow and the data type provided by canvas.

I suggest you declare canvas variables in 'initialize variables' in flow. 

Declaring variable in the parameter of some flow actions is confusing.

Best Regards,

Wearsky