Questions about TH2 Efficiency map using the TH1 Efficiency plots

Dear RootExperts,

I would like to know if I can build a TH2 Efficiency map using the information of the Two TH1 independently Efficiency(see the example attached) plots.

Let us know if you have a piece of code to exemplify this.

Best regards,
Sandro & Eliza & Allan

Going from 2 x 1-d to 2-d is not possible.
Going from 2-d to 2 x 1-d is possible.

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