Sawadee Kahp,

To be more specific, my problem is this:

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This code causes a subsequent do form xxx to err: Cannot find Alias xxx
In Combo1.Valid:

LOCAL nCurArea
nCurArea = SELECT()
cfgProj = ALLTRIM(THISFORM.Combo1.Value) *DropDown value
USE projects AGAIN *Open lookup
SET ORDER TO project
SEEK cfgProj *Find Value
IF FOUND()
cfgProjPre = ALLTRIM(prefix) *Set table prefix
? cfgProjPre *Confirm
ENDIF
SELECT(nCurArea)

Then cfgProj and cfgProjPre are used to specify the form to open.
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This code does not cause any errors:

In button.Click:

cfgProj = "xxx"
cfgProjPre = "xxx"

Then cfgProj and cfgProjPre are used to specify the form to open.
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I really need to use a combobox here...;)

Eric K.