double quotes (") or apostrophes (').expanded or not expanded

[xoctan657]

hi evryone in houdini help expression i read this :

Quoted strings

Text inside single quotes (') is not expanded.

Text inside double quotes (") has variables expanded. A double-quoted string is considered one argument.

so what is that mean

i have an example and when i use (`) evry thing it's work but when i use (") nothing work , so if anyone know how and why please explain it and

as in houdini help i couldn't to understand it

thanks for all

[edward]

I think you're confusing backtick, the key to the left of the 1 key (on american keyboards), with single quote, the key to left of the Enter key. Backtick's are used to run expressions when not inside an expression context.