maybe this is also of use to you or maybe somebody has a more elegant way of doing this?

{Turning UP}
Daysback:=4;
Trigger:=0.00;
Indicater:=Fml("call the indicator here");
MtmLow:=LLV(Ref(Indicater,-1),Daysback);

((Indicater-MtmLow)/Abs(Indicater))>Trigger;

________________________________________________

{Turning DOWN}
Daysback:=4;
Trigger:=0.00;
Indicater:=Fml("call the indicator here");
MtmHigh:=HHV(Ref(Indicater,-1),Daysback);

((MtmHigh-Indicater)/Abs(Indicater))>Trigger;

____________________________________________

Instead of Indicater:=Fml...
you could of course plug in an indicator and its parameters directly, like
Indicater:=Mov(C,55,E)