Jens, you are again 100% correct. [Smile]

I had to add an extra "$" to make an evaluted variable back into a variable.

code:
	$x="a","b","c"
	$=""
	for each $y in $x
		if len($c)<3 and $y="c"
			$c=$mask[0+$c]
		else
			$z=execute('for each $z in split($'+$y+',".") $=$+$nums[0+$z] next $'+$y+'=$ $=""')
		endif
	next
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