Having Problems withe wiggle expression (Ae Begginer)

Hi, Im Rafik and Sorry if my English is bad i have a problem withe wiggle expression i have been trying to selove for two weeks now and i have no experiance withe wiggle and expresions So for example i have a (solid) withe this position expresion [wiggle(100,50) ] So now the position is (659.8,307.9) Now when i add any other layer next to it or under it any where in the entire timeline[ For ex: text , video , music] My Solid Wiggle Position Will Change for now Whenn adding text on top changed to [645,327] I'll be happy to get answers

