Thanx Ali!!!
As I said before, the product is home made, so it doesn not have a comercial name nor brand. I buy it in a hobby store in Buenos Aires, the owner makes it. I know the glue used in the product is the simplest white glue used for glueing paper. As it is part of the paste it is also the best product to glue the parts to the clicky.
Sorry I can't help with more.... I was very lucky to find this. Only problem is I'll be lost if this guy goes out of bussiness without telling me the recepy!