Items tagged with return

What is the best way to export/update multiple values from a single procedure? As far as I understand, a procedure does not let you update global values (the inputs), and it returns the value for the last step performed. Let's say for example, I had a procedure like this:

proc(a,b,c)

local x,y;

*series of steps that use a,b, and c to calculate x and y*

end proc

 

How do I get the results for x and y out of the procedure? 

 

Thanks

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