Hi Prabhat,<br><br>I'm glad it worked for you. I have not worked in
the user input expression mode too much either, but did develop a way
to calculate what direction a window is facing and determine glass type
based on this info. I'm attaching the text file with the module and
instructions.<br>
<br>I found that the best resource for this is the help file. Once
help is open, under contents go to: Volume 3: Topics --> Building
Description Language --> Keyword Expressions<br><br>When learning expressions, start with a very small
expression, and try it out. Try running the file too to make sure
there are no run-time errors as a result of the expression. Once you
get a small piece working, add to it slowly. This will help you figure
out exactly where your errors are.<br>
<br>Good luck! I hope I can help with future questions.<br><br>--<br><font color="#888888">Karen</font><br><br><div class="gmail_quote">On Thu, Jun 26, 2008 at 4:28 AM, Prabhat Barnwal <<a href="mailto:prabhat.greenbuildings@gmail.com">prabhat.greenbuildings@gmail.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Dear all,<br>
<br>
While writing an expression for window frame width of curtain walls in<br>
eQuest 3.61, I am getting 'Expression parsing error' saying the user<br>
expression is too long. The expression used is-<br>
default :<br>
PARENT("WIDTH")*PARENT("HEIGHT")*0.0464/(PARENT("WIDTH")+PARENT("HEIGHT"))<br>
<br>
How should I modify or change it?<br>
<br>
Are there provisions for creating local variable by arithmetic operation on<br>
present variables? For example, the length of this expression can be reduced<br>
, if I calculate perimeter of parent wall first and use that value directly<br>
in the expression.<br>
<br>
Any help will be appreciated.<br>
<br>
Regards,<br>
Prabhat Barnwal<br>
New Delhi<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Karen Walkerman<br>Second Law Consulting<br>802-238-0980<br><a href="mailto:kwalkerman@gmail.com">kwalkerman@gmail.com</a>