Help me please

[Wichi]

I want to have the distance between the upper and lower bollinger bands but I don't know how to do it. I've done this but it doesn't come out.

[jstap]

I would right click the result box, a list of the variables will come up, insert the variable, this should then give the result as a price fraction, if you want it in pips change in a modify variables block.

[Wichi]

I have got it. Now how can I do if variable is greater than 30, operate buy or sell and if it is less, do not operate.

[jstap]

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