Bug with sc_apl_conf in my menu?

Hello,

Is it possible to use the sc_apl_conf macro several times in a menu?

In this example:

if ({sc_script_name} == "formulaire_usagers_en_attente") {
	sc_apl_conf("formulaire_usagers_en_attente", "start", "new");
}

if ({sc_script_name} == "Itmav-editer") {
	sc_redir("Itmav-editer","id=[itmav]");
} 

if ({sc_script_name} == "formulaire_usagers") {
	sc_apl_conf("formulaire_usagers", "start", "new");
}

The first instruction never works, even if I change the order, the first is never taken into account, why?

THANKS.