Opening order when doublestochastics crosses 50 line

[goodness]

Hello,

I would like to automate and backtest my tradingssystem.

I use the doublestochastic indicator and I need a signal to open a position,
when the k-line has the value 50, otherwise you can say the k-line crosses
an 50 line.
I need the ninja script for this signal. My search results failed.


I apologize for my english, I come from germany.

Thanks.