Graph builder wrong output

I have used the attached graph to write an output, the output files are written but the bands do not have any information. Its all black in all the written bands. Can anyone please help me with this?

Dear Rajeev,

In order to replicate your issue, could you please indicate the equations used in the BandMaths modules and which bands are you merging in BandMerge?

Thank you,

Thank you. I think now I got the solution. My problem was in subsetting. Fixed now. Happy.