var t = time / maxtime;
var func = lerp;
if (iscolor)
    func = merge_color;
if (i_ex(target))
{
    if (init == 0)
    {
        if (is_string(pointa))
            pointa = variable_instance_get(target, varname);
        channel = animcurve_get_channel(animcurve, channelname);
        init = 1;
    }
    var cont = 1;
    if (respectglobalinteract == true)
    {
        if (global.interact != 0)
            cont = 0;
    }
    if (cont)
        time++;
    variable_instance_set(target, varname, func(pointa, pointb, animcurve_channel_evaluate(channel, time / maxtime)));
    if (time >= maxtime)
    {
        if (loop && loopcount != 0)
        {
            if (loopcount > 0)
                loop--;
            time -= maxtime;
        }
        else
        {
            instance_destroy();
        }
    }
}
else
{
    instance_destroy();
}