Fix add() method
Fix add() method

GerHobbelt/DropKick,chrismoulton/DropKick,spoonben/DropKick,acebalajadia/DropKick,alexgleason/DropKick,alexgleason/DropKick,chrismoulton/DropKick,acebalajadia/DropKick,GerHobbelt/DropKick,alex-riabenko/DropKick,Robdel12/DropKick,alex-riabenko/DropKick,Robdel12/DropKick