Sapscript Address variable change not working

I am using a program to change Addrerss Name1 by using a Perform  in the SapScript

It returns the converted Name in upper case as it should, but then names2, 3, and 4 are blanked out. 

If I uncomment the line    NAME        &REGUH-ZNME1&, &REGUH-ZNME2&, &REGUH-ZNME3&, &REGUH-ZNME4&

and comment out line   NAME        &UPPERCS_NM&, &REGUH-ZNME2&, &REGUH-ZNME3&, &REGUH-ZNME4&

it prints each of the Name variables but Name 1 is Lower Case and it must be Upper Case