entity cannot move after joining session

#include <acknex.h>
#include <default.c>



///////////////////////////////////////////////////////////////////////////////////
STRING *messages_str = "#50";
FONT *arial_font = "Arial#14";

TEXT *messages_txt = // displays the messages on the screen
{
	pos_x = 10;
	pos_y = 10;
	layer = 10;
	font (arial_font);
	string (messages_str);
	flags = SHOW;
}
///////////////////////////////////////////////////////////////////////////////////

//player movement
function move_players()
{ 
	while (1) 
	{
		my.x += my.skill1;
		my.y += my.skill2;
		ent_sendnow(my);
		wait (1);
	}
}


//main funktion
void main() {
	fps_max = 60;
	level_load ("level1.wmb");
	camera.z = 1000;
	camera.tilt = -90;

	wait(3); 

	//no server or client --> exit game
	if (!connection) {
		str_cpy(messages_str, "Can't find any server. Please try again later.");
		wait (-4);
		sys_exit(NULL);
	}

	//connected as a client
	if (connection == 2) { 
		//client information
		str_cpy(messages_str, "Running as a client");
		str_cat(messages_str, "\nServer IP address: ");
		str_cat(messages_str, server_ip);
		str_cat(messages_str, "\nServer name: ");
		str_cat(messages_str, server_name);
	
		//init level
		

		//create player
		my = ent_create ("player.mdl", vector (100, 50, 40), move_players);
		while (1) {
			my.skill1 = 8 * (key_w - key_s) * time_step;
			my.skill2 = 6 * (key_a - key_d) * time_step;
			send_skill (my.skill1, SEND_VEC);
			wait (1);
		}
	}

	//connected as a srever
	if (connection == 3) {
		//server information
		str_cpy(messages_str, "Running as a server");
		str_cat(messages_str, "\nServer IP address: ");
		str_cat(messages_str, server_ip);
		str_cat(messages_str, "\nServer name: ");
		str_cat(messages_str, server_name);

		//init player
		my = ent_create ("player.mdl", vector (-100, -50, 40), move_players);
		while (1) {
			my.skill1 = 8 * (key_w - key_s) * time_step;
			my.skill2 = 6 * (key_a - key_d) * time_step;
			wait (1);
		}
	}
}