I first thought that with pointer you meant the entity pointer, I overlooked that the var/array could also have a pointer.
But how do write the send line correctly?, I now have tried the following 2 but those resulted in the instant crash:
if (player_handle[i] != 0) send_var_id(id,&player_handle[i]);
if (player_handle[i] != 0) send_var_id(id,&(player_handle[i]));
Thank you for your patience