Short selling in options

Dear members plz help me,

i am short sell put option of xyz (450 each share price) company at lot size 1000,price each 10rupee ,after some days,
At end of option expire date xyz share price 460,put option valu Rs:0 rupee and i am not buy my short selled option becasue
of there is no seller to buy my options.what will happen at that time plz help me.

Regards
sai
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