the error i keep getting is '...{

{
_items = itemCargo _x;

if {count |#|_items > 0] then {

File EODS_ieds\funciones\PCU\EODS_PCU_FUNCIONES_GENERALES.sqf , line 27
_itemselec + _items ...'
Error Undefined variable in expression: _items


this error stays up on the screen in a black text until i switch back to the main weapon
whenever my gun is swapped this error appears till i switch back