need ideas to 'deflag' my collision object after each tick.

[khoowaikeong]

i have a flag which is set to true when I detect the object is on ground.
i need to set it back to false before the next stepSimulation(),

I could keep a copy of all the object pointer in an array and loop it to clear the flag,
but I am wondering if i could just get the array from dynamicworld.

OR

are there any better way of flagging collision result?