Sample pad pro external pad 1 dual zone not working

does Roland PD-8 V-Pad work with sample pad pro external pad 1? When I plug it in and tap on the center of the pad I do see setting appear for ext A, I select the wav file I want the center of the pad to play. Then I select ext B and set another sound for that. However whenever I hit the rim which should be the ext B sound It switches and displays only ext A.

Any and all help is appreciated.
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