Code:

---

string file_name = "t";
string file_type = ".pcx";
string file;
string file_number;

panel transform_l01_normal
{
	flags = d3d, visible;
	layer = 11;
}

function random_panel()
{
  var i;
  i = int(random(3))+1;
  str_cpy(file,file_name);
  str_for_num(file_number,i);
  str_cat(file,file_number);
  str_cat(file,file_type);
  
  transform_l01_normal.bmap = file;
}

---

i have some files (t1.pcx, t2.pcx, t3.pcx,....).
where is the error?
the game crashes if i call this function...