Simple buttons on a simple map (from a simple mind:)

Hello, I realize an interactive map of Morocco on Animate. About ten cities are pointed with, for each of them, a supposed button to reveal a small histogram. The code for the first city works normally : in the click the histogram appears correctly. On the other hand, the following city, with the same code (but names of ocurrence different) stops working.

Does anybody know the principle of coding the best adapted in this case? Thank you in advance for the answer. (May be an answer in french?:) 

For information here is code i used