Hello,

It would be greatly appreciated if someone would provide some advice on
how to create a user input expression. In order to easily manipulate
the percent glass of a building in the detailed interface, I would like
to create an expression that sets window width based on a global
parameter for percent glass I created. To accomplish this, I right
click on the width input cell and select "Edit/View User Expression...",
then enter the following code I came up with based on what I have been
reading in the DOE-2 help files.

(PARENT( EXTERIOR-WALL:HEIGHT ) *

PARENT( EXTERIOR-WALL:WIDTH ) *

PARAMETER("East Wall Percent Glass")) /

LOCAL( HEIGHT )

This does not work. Below are the errors that the above expression
generate.

Expression Parsing Error: Invalid BDL Keyword Function Argument
'EXTERIOR-WALL:HEIGHT'

Expression Parsing Error: Invalid BDL Keyword Function Argument
'EXTERIOR-WALL:HEIGHT'

Expression Parsing Error: Invalid BDL Keyword Function Argument
'EXTERIOR-WALL:HEIGHT'

I have tried several variations of this expression with no luck.

Thank you in advance for any advice you can provide.

Jeremy