d = 0;
go = 0;
if (instance_exists(OBJ_WRITER))
{
    if (OBJ_WRITER.halt == 0)
        go = 1;
}
if (pos >= 6)
    go = 1;
if (go == 1)
{
    if (pos >= 3)
    {
        y = ystart + 2;
        armx = 2;
    }
    if (pos >= 6)
    {
        y = ystart + 4;
        armx = 4;
    }
    if (pos >= 9)
    {
        y = ystart + 2;
        armx = 2;
    }
    if (pos >= 12)
    {
        y = ystart;
        pos = 0;
        armx = 0;
    }
    pos += 1;
}