Send chart by email plots RSI wrong

I use this code to plot the RSI in a separate pane:

r = RSI( 14 );
Plot( r, "RSI", colorDefault );
PlotOHLC( r, r, 50, r, "", IIf( r > 50, colorRed, colorGreen ), styleCloud | styleNoLabel | styleClipMinMax, 30, 70 );

it shows it in Amibroker just as desired:

but when I select ==> File ==> "Send chart via Email", the result looks like this:

how to fix this?
Thank you :pray: