Code generation questions

Hi,
I have a couple of questions. First of all, sorry for my english.

1)
when I draw an aggregation between 2 classes, the code generation places a
variable in the 1st class. That variable doesn't compare in the attribute
list of the class. Why? Can I choose the name of that variabile?

2)
I drew an aggregation. In the source code a variabile has been added. I
deleted that aggregation but in the source code the variable is still
there! I drew another aggregation and argouml added another variable! 2
variables but 1 relation. I deleted the new relation too but the 2
variables are still there! There is a way to force argo to regenerate the
code?

Thanks


CG