Using variables

[rsanford]

One of my variables is set to take a numerical amount from a Microsoft Form and multiply it by a specific amount.  However, there is a previous question on the form that branches past this question if it does not apply.  If this question is not answered, the flow fails because there is no value to input.  Is there a way to create an action where if the answer is blank, it will input 0 or tell the variable not calculate?

[v-yuazh-msft]

Hi @rsanford,

Could you please share a full screenshot of the configuration of your flow?

You could add a Condition to check if the value is null, if the value is null, set the variable to 0,if no, set the variable with the value.

I have made a test on my side to create the flow as below:

I have save the question 1 answer in the Compose, and check if the compose is null.

The expression in the Condition as below:

@empty(outputs('Compose'))

When a response is submited,and the question is no answer, the flow would run successfully as below:

Please let me know if your problem could be solved.

Best regards,

Alice

[rsanford]

Thanks.  I am still having trouble.  See flow below.  The variable I am working on is the "mileage cost."

[v-yuazh-msft · Accepted solution]

Hi @rsanford,

In my screenshot, I choose the Output dynamic content of the Compose in the Value field to set the variable.

Best regards,

Alice

[GabrielStJohn]

 Hello, @rsanford!

Have you had an opportunity to apply @v-yuazh-msft‘s recommendation to adapt your Flow? If yes, and you find that solution to be satisfactory, please go ahead and click “Accept as Solution” so that this thread will be marked for other users to easily identify!

Thank you for being an active member of the Flow Community!

-Gabriel

Flow Community Manager

[rsanford]

Thank you for the help!  I think I got that part to work.  However, it is still failing at the next step when I am trying to multiply the variable by 1.75.  I am using the following code:  

mul(float(body('Get_response_details')?['r186108bf159f4ca7a0f156601dc48f4e']),1.75)

Here is the error message I get: