Problem in the visualization of expected limit bands

[mgabusi]

Hi,

I encountered a visualization problem calculating limits with HypoTestInverter.
These are the numbers I get using UpperLimit() and GetExpectedUpperLimit() methods, belonging to HypoTestInverterResult class:

===== Upper Limit : 0.00167596 ( +/- 1.08363e-05)
===== Expected Limit : 0.00288383
===== Expected Limit Interval (1 sigma): [0.00138267, 0.00467914]

When I call the method GetExpectedUpperLimit(-1) and GetExpectedUpperLimit(1) I get values different from the ones I can deduce from HypoTestInverterPlots bands.
Is this a known issue?
I could not upload the root file, which exceed 10 Mb.

Thanks.

Michele.