Input values are not all the same layer

input-value-layers.gpc

int raw_cross;
int current_cross;
int previous_cross;

main {
    raw_cross = get_ival(PS5_CROSS);
    current_cross = get_val(PS5_CROSS);
    previous_cross = get_lval(PS5_CROSS);

    set_val(TRACE_1, raw_cross);
    set_val(TRACE_2, current_cross);
    set_val(TRACE_3, previous_cross);
}

Read	Layer	Typical use
get_ival(id)	physical/unmodified input	features that must not feed on earlier script changes
get_val(id)	current value after earlier changes this cycle	composing deliberate transformations
get_lval(id)	final outgoing value from the previous VM iteration	output-history comparison

Use event_press / event_release for ordinary button edges. Use explicit current-versus-previous comparisons when the exact input layer matters.