Please help with tradestation indicator

[Motor]

Can someone, please, translate this Tradestation indicator into Ninnjascript.
Thanks a lot.

Tradestation ELD
[LegacyColorValue = true];
input: EMAlength(13), ATRlength(20), ATRmultiplier(2), smaLen(20);
Plot1(Xaverage(High,EMAlength)+ ATRmultiplier*AvgTrueRange( ATRlength),"UpperVPI");
Plot2(Xaverage(Low, EMAlength)- ATRmultiplier*AvgTrueRange( ATRlength),"LowerVPI");
Plot3(AverageFC(c,smaLen),"sma");