Try using BUTTON(2) instead of just BUTTON(), and try writing your IF statements with ELSEIF like this:
IF B AND #DOWN THEN
GOTO @ITEMLST2
ELSEIF B AND #A THEN
GOTO @HPOT
ELSEIF B AND #B THEN
GOTO @ITEM
ENDIF
This way will ensure only one action is used each. Note that order is very important here. If A and B are both pressed, it will GOTO @HPOT.
1そうだね プレイ済み