help with code for ribbon

#1
like the title says, i need help coding a ribbon
i have two independent variables, an UP and DOWN
each variable has two statements

Up=EMAup>upMA ;
UpSide=EMAup<upMA ;

Dn=EMAdown<dnMA ;
DnSide=EMAdown>dnMA ;

Ribbon_kol=IIf(up ,colorBlue, IIf(upside, colorpink, IIf(dn, colorRed, colorlightblue);
Plot(4, "Ribbon", Ribbon_kol, styleOwnScale|styleArea|styleNoLabel, -0.5,100);

ribbon actually plots with no error, but only plots two colors
how should i approach this?
 

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