>Ok, it's Friday. Must be why I can't see the forest...
>
>I can programmatically pass information correctly to a bluetooth device using this format (the format is the bluetooth device's programming language syntax):
>
>lnBytes = thisform.zOcx.Send([! U1 GETVAR "bluetooth.authentication"]+CHR(13)+CHR(10))
>
>That succeeds. However, if I type
>
>! U1 GETVAR "bluetooth.authentication"
>
>in a textbox and try this:
>
>lnBytes = thisform.zOcx.Send(thisform.text1.value+CHR(13)+CHR(10))
>
>it fails. So does passing single quotes or square brackets. I need to pass a value INSIDE double quotes taken from a value typed in the textbox and pass the double quotes in the string. Any ideas? What obvious thing am I missing this time? :o)

check INCLUDE file definitions:

#DEFINE GETVAR something
#DEFINE U1     something

use

lnBytes = thisform.zOcx.Send('! U1 GETVAR "bluetooth.authentication"'+0HD0A)