•Hover over any item in the Functions pop-up to see its description and syntax.
•When you add a Function to the Expression Editor, an example of the syntax appears, as a guide. (Delete this part when you no longer need it.)
•The required separator (comma or semi-colon) is also shown – this automatically corresponds to your computer’s location settings.
•When you add a Function to Expression Editor, you can hover it to see its description, syntax, and the Data Type required for each Argument. For example, in this CONCAT function, the “text1” and “text2” arguments must be of the String type.
For more help on how each Function works, see:
For explanations of Error messages, see:
Errors in Expressions and How to Fix Them
Relevant topics
Expression-defined property labels
Property labels can use expression-defined properties and considering the fact that an expression-defined property can have sequences, this will make it possible for one property label to be used on different element types, displaying element-type specific properties.
Expression
Calculates a mathematical expression. You can use any GDL operators or functions in the expression. You have to reference the parameters with a $ sign prefix.
Inputs
Name
Type
Description
A
Number
Refer to it in ...
Expression-based properties FAQ
Expression-based properties have been introduced as one of the main new features in ARCHICAD 22 to help designers in creating data-rich building models.