How to find last traded price of a particular strike

Hi

assuming that I know the strike in which I wanted to place a trade - now I would like to track its price, and place a trade when it crosses certain price. My question is which keyword should I use to find the price of that specific/particular strike? Can someone help me on this please?

Thanks

LTP can be find out with below 3 types-
Get runtime
Traded instrument
Instrument name