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Helper II
Helper II

Flow Failing with Null


I have created a Micorosft Form that staff fill out to change there personal details. If they need to change their name, they need to upload evidence, but if they change address they don't need evidence.


However, the flow fails when they don't upload evidence


InvalidTemplate. Unable to process template language expressions in action 'Parse_JSON' inputs at line '1' and column '2772': 'Required property 'content' expects a value but got null. Path ''.'.


I've tried adding a condition first to check if "Evidence" is blank but it doesn't work


Any suggestions please



Super User III
Super User III


In your condition try using the empty expression in the first field like this:
Empty(<SELECT dynamic content evidence>)
And in the second field use the expression:



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Hi @karldenton 


The dynamic content doesn't seem to work for me when trying to use the condition as:


@empty(DynamicContent) is equal to True


but I did seem to get it to work by putting the dynamic content Evidence into a Compose action and then using the Compose in the empty expression:


@empty(outputs('Compose')) is equal to False


I also changed it to equal False so that when the compose is empty it moves to if no not if yes.


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