help on pick up

hey, i need some help
i am trying to have the dumbell be picked up by the dog for a game im making. i try to set the value in one of the if else thingys as world, but when i do i get an error message that it cant be done, i dont remember the exact wording or anything.
the file is attached

You had programing errors.
The major one was you said "if" then had "the condition" after the if as a result. The result will never cause the cause to cause the result.

Is this better?