Hi @bella_lowes,
I assume that you add additional Compose action under the trigger after find you could extract the phone number.
After you edit the Flow, you should remove the Flow from the PowerApps, then add the Flow back, if the original number of parameters in function is three, you should add the 4th parameter into the function on the PowerApps side.
How many compose action on Flow, there are how many parameters in the function on PowerApps side.
Best Regards,
Community Support Team _ Lin Tu
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