Code:
global ctrl firmAge lnEmplNum  lnTtlAsset lnRDMoney patentCount1  highTech innovEntAward  
global ctrlNonMissing = stritrim("$ctrl") //this step doesn't work
global ctrlNonMissing: subinstr global ctrlNonMissing " " ", ",all
how to replace the blanks in macro "global", just leave one blank between elements of macro.
Thanks!