I can see what you are trying.
You don't need to use "AND" block at all, this block is to make parallel blocks to behave as serial, but it's much better to just connect them one after another.
Then, under "on Tick" blocks are executed on every tick, and every block does what it has to do once. "Sell now" creates a new trade, and goes to the next blocks... but next blocks are executed only once, after the sell trade is created.
There are many ways to do this, but this can do the trick: http://fxdreema.com/shared/P2Wh31uac