Thanks krileon.

Now I understand what you said. I followed the steps that you explained and works nice but is not exactly what I need. The use of a new field (delimiter) is a bit tricky and I want a clear implementation.

I want to create the fieldtype plugin for use and reuse for other projects.

What could be a good start point to begin and not die in the effort? What main elements I must to consider.

Thanks again, I'm learning too much with your answers.

Ok, I'm going to review these plugins and I will tell you if I find problems with the code.

Thanks.

Thanks for the answer.

I know that:

we're not a consultation site

I'm going to work by my self, only if I need a little bit of orientation then I will ask. Your advice is very useful to me.