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You are in the best place for C4D help, and we have a good number of modelling guys who will be able to assist you...
This isn't the place to modelling questions, but yours is a very quick one to answer so I'll do it here this time... please also complete your profile so that we don't have to ask which version you are running every time you have a question...
The procedure for setting up a bend is as follows:
1. Make the bend deformer a child of the object you wish to bend - you have done that OK.
2. Find the axis you wish to bend along - in your case it is the red axis, or X.
3. In the bend attributes, change Alignment to X+ and then hit Fit to parent. Play with Strength. Bend will now work as expected in that direction.
CBR