Solve App selecting Independent Plot Var

[Dirk.nl]

Know someone how, for the Solve App, to select programmatically the independent plot variable? Like command <SetIndep> for the Statistics_2Var App.

Help for the Plot part for the Solve App shows;
“The variable that is highlighted in the Numeric View is taken as the independent variable for graphing purposes.”

I think it must be possible to do this also programmatically, but I don’t know how!!
If it is not possible, maybe HP can implement this.