"Redefinition of formal parameter" build error when trying to output from function.

Thanks! I’ve now got other (much worse, can’t even open the project now) issues but that solved that problem.

Thanks for the responses

e: for the sake of people who google this problem:
it seems to have been solved by getting rid of the type declaration in the body of the code.
So i changed my calculation to just A_Out =(newAN + newAT); etc