first of all you need to set variables for your sprite x and y postitions like this:
bananaX = 0 (or where ever u want it on the X axis)
bananaY = 0 (or where ever u want it on the Y axis)
`do the same for the other sprite
and when u use the sprite command, put the bananaX and bananaY variables in the x and y positions, like this:
Sprite 1,bananaX,bananaY,2
`and same for the other sprite, if u want it to move
and for getting the sprite to move, try this:
do
if leftkey()=1
dec bananaX,3 `the number 3 is the speed!!!
endif
if rightkey()=1
inc bananaX,3
endif
`this is to refresh ur sprites
sprite 1,Xvariable,Yvariable,2
sprite 1,Xvariable,Yvariable,2
hope this help