Set Trailing Step According to Order Swap and Minimum Stop allowed

I am using a swap strategy with two account with different brokers (hedged accounts). I have the code that sync between the two account (via two brokers).

When i close a BUY order with broker A, my EA send Close message and the SELL order on broker B gets closed. i get profit from [swap minus commission] on broker B.

What i need instead of closing the order on broker B do the following:

1. Get the total swap of the SELL order.
2. Set the Trailing stop loss by the [swap minus commission] value, e.g if the [swap minus commission] is $50, set the stop loss so if it gets hit the loss will be $50 max.
3. Check the minimum allowed stop loss by broker, and if the needed step (calculated on step 2) is above the minimum , do not set trailing stop , just close the order with the [swap minus commission] profit.