if ((global.log[argument0] == 0 && argument3 == 0) || (global.log[argument0] == 1 && argument3 == 1 && (!instance_exists(oScanning))))
{
    scan = instance_create(0, 0, oScanning)
    scan.lognumber = argument0
    scan.text = argument1
    scan.alarm[0] = argument2
    scan.mode = argument3
}