Modify existing strategy builder to cancel pending orders

[Daveb772]

I created a strategy using strategy builder in NT8.
When conditions are met, it places a bid order for long or short depending on the condition.
If the first order gets placed, a new pending order gets placed 2 ticks away from the first order.
If the second order gets placed, a new pending order gets placed 3 ticks away the from first order
If the first order gets filled, or if the first and second gets filled, I would like to cancel any pending orders on that bar.
I realize I would need to unlock and modify the strategy, but I'm not much of a C+ programmer.