Runtime Error Attempt to invoke virtual method 'java.lang.String com.google.appinventor.components.co mmon.FloorAmount.toUnderlyingValue()' on a null

I am getting this type of error in my app :-
Runtime Error Attempt to invoke virtual method ‘java.lang.String com.google.appinventor.components.co mmon.FloorAmount.toUnderlyingValue()’ on a null
Anyone please help me it’s urgent.

when this bug will be fixed ?

Did you read above post ? You can fix it using blocks

What’s the meaning of ‘floor amount’ ?