https://community.graphisoft.com/t5/Libraries-objects/default-parameter-that-can-be-changed/m-p/95475#M33009 You have set yourself a tough task. While there may be a tricky way do just what you want, the easiest thing is to have a separate parameter that allows the user to select a "default" or "custom" value. This would then instruct the code to calculate the value according to the zone number or allow/require the user to enter a value. The details depend on just what you want to do. There are too many possible variations for me to go any further. Sun, 24 Sep 2006 06:44:18 GMT Anonymous 2006-09-24T06:44:18Z https://community.graphisoft.com/t5/Libraries-objects/default-parameter-that-can-be-changed/m-p/95474#M33008 <DIV class="actalk-migrated-content"><T>hi<BR /> <BR /> I'm trying to setup a zone stamp that has a custom parameter. I want it to have a default value that can be changed if necessary. eg if zone category is 09 then var = 2 and that is displayed in the parameters box but if the user wishes to enter a new value for var then it should be available in the stamp parameters list and applied accordingly...<BR /> <BR /> had a play but drawn a blank so far.<BR /> <BR /> any ideas how to do this?<BR /> <BR /> TIA<BR /> <BR /> Adri</T></DIV> Sat, 23 Sep 2006 17:18:01 GMT https://community.graphisoft.com/t5/Libraries-objects/default-parameter-that-can-be-changed/m-p/95474#M33008 Anonymous 2006-09-23T17:18:01Z https://community.graphisoft.com/t5/Libraries-objects/default-parameter-that-can-be-changed/m-p/95475#M33009 You have set yourself a tough task. While there may be a tricky way do just what you want, the easiest thing is to have a separate parameter that allows the user to select a "default" or "custom" value. This would then instruct the code to calculate the value according to the zone number or allow/require the user to enter a value. The details depend on just what you want to do. There are too many possible variations for me to go any further. Sun, 24 Sep 2006 06:44:18 GMT https://community.graphisoft.com/t5/Libraries-objects/default-parameter-that-can-be-changed/m-p/95475#M33009 Anonymous 2006-09-24T06:44:18Z