rfiske 

Yes - that is what i was referring to. The measuring bar is/should be the first bar and the resulting congestion box h/l should be the h/l of the measuring bar > correct? However this indicator seems to use the first 2 bars h/l. That is why i am suggestion the above changes. Do you agree? or am i wrong? Thanks for your help.

You are correct on the Ross material.

Thanks - maybe i can get some help from TMFT or someone to make the above changes and post an updated indicator