How do you beat Egypt on civiballs level 4

first, click the left chain on the red ball. once it is pointing to the big gray ball, click the right chain on the red ball. the red one will hit the little gray ball, the gray ball hitting the green ball. wait till the green ball is directly above the green pot, then click the chain. now, click the chain on the big gray ball. it will hit the red ball, and the red ball will hit the yellow ball before falling in the red pot. now the yellow ball will be swinging, so wait till it is pointing more towards the yellow pot ( a little bit away from the red pot) and then click the chain.