Any idea why VFP doesn’t like this attempt to eval a local string var into an object reference:

Lparameters tcField, tcValue

Local lcContainer

lcContainer = 'Thisform.Container1.container' + tcField + '.Controls'

For each loControl in &lcContainer
	If Upper(control.baseclass) = 'CHECKBOX' and Upper(tcValue) $ Upper(loControl.caption)
		loControl.value = 0
		loControl.enabled = .f.
	EndIf
EndFor

It gives a "Nesting Error" messagebox *AT THE END* of the first pass through the loop. I can see in the debugger that “control” has been resolved as the first item in the collection of Controls and that it has made it to the EndFor line when the error message appears.

Why does it choke out with this syntax?


If I wrap in in parentheses it works fine:

For each control in (lcContainer)
  ...
EndFor

What's the difference here in () vs. &


.