[amibroker] [CODE] How to check if Begin and End Range Markers Selected or Not Through AFL

 

Here is what i want to do through AFL:

AFL should check if I have selected Begin or End Range or not. If not selected then Assign the Bar Number of the Currently Selected bar.

Here is what I have done so far, but it's not working:

bi = BarIndex();

Currbar = SelectedValue( bi );

bb = IIf(IsNull(BeginValue( BarIndex()    )), Currbar, BeginValue( BarIndex()    ) )  * 1 ;
eb = IIf(IsNull(EndValue( BarIndex()    )), Currbar, EndValue( BarIndex()    ) );


Any help on this Please?



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