To make a caster level check, roll 1d20 and add your caster level (in the relevant class). If the result equals or exceeds the DC (or the spell resistance, in the case of caster level checks made for spell resistance), the check succeeds.
Also 1d20+Level der zaubernden Klasse.
/em wirkt einen Zauber und muss den Zaubergrad-Wurf schaffen. [[1d20+@{selected|casterlevel}+@{selected|spellpen}]] vs spell resistance