Hi Rodgers,
I'm not entirely sure what you are trying to achieve, most likely you are mixing up Javascript style of programming with HAL but HalPushButton has built in event listener and once you click on the button a procedure will be executed. In my example procedure that we will execute is UpdCustomerAddressCUDsm but this can be any procedure you define in your halcust as long as it is defined as 'global'.
Like I mentioned above, please refer to our documentation on this URL:
http://halforum.hansaworld.net/primitives/procedure/HalPushButton
As you can see one of parameters is funcname and this is exactly what I described above.
Best Regards,
David D.