How do you implement varname from new settings in custom php script?

[EquinoxWorld]

Thank you so much for the fast reply Disasterpiece. Works perfect, now I understand so much better how those options work. Opens up a whole world of possibilities.

Just to see if I have it clear. I'll use the first if condition if I only want ot allow one usegroup per the options and the second if it's more that one?

--------------- Added [DATE]1310996257[/DATE] at [TIME]1310996257[/TIME] ---------------

Funny thing I tried to add another usegroup to this option like usergroups allowed: 6, 1 for example and I press save it loads returns to that same page but the value still remains 6 and not 6,1 like I had put?? Any ideas what I could be doing wrong?