<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def UsersChangePassword (self, current_password, new_password):

 """
 Change the password for the current user
 
 @param current_password (string) - md5 hash of the current password of the user
 @param new_password (string) - md5 hash of the new password of the user (make sure to doublecheck!)
 
 @return (bool) - Boolean indicating whether ChangePassword was successful.
 """

        if self.__SenseApiCall__('/change_password', "POST", {"current_password":current_password, "new_password":new_password}):
            return True
        else:
            self.__error__ = "api call unsuccessful"
            return False