Hi … I am new to GH and I am trying to use Expression.
The Expression i need is ((( 90 < x < 180 )) but i get a Syntax error: Right hand value of operator < is Null.
How to make it a correct Expression.


Plug some number in x input. This input doesn’t have a defined type, so GH doesn’t know if you want a 0 or 0.0 or “” or {0.0, 0.0, 0.0}… so its null when empty and the operation can not be performed.

thanx for you answer. Do you mean that i can not have a list with the numbers between to numbers ( in this Example 90 and 180 ).
Or is there any other Method.

Expresion is a evaluator, you give x and get r. You need a number generator, try with Range component.

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(90<x) and (x<180)



thank you so much …:slight_smile: