[amibroker] help on Set Option marginrequirement AFL

["malc5899" <malc5899@xxxxxxxxx>]

Anyone know why this error occurs?


QQQtoday=(Foreign("QQQ","Close")-Ref(Foreign("QQQ","Close"),-1))/Ref
(Foreign("QQQ","Close"),-1)+1;/*  */

Margin = 100/QQQtoday;/* 100=no margin */

Margin =Nz(Margin,100);

SetOption("MarginRequirement",Margin);
-------------------------------------^

Error 2.
Bad argument(s)




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