strange behavior on product pricing and shoppergroups

[ptmocho]

Hi,

I have joomla 3.4.8 Virtuemart 3.0.12 php 5.4.43

I need to implement a different price for a specific shoppergroup and for the other groups including guests another price, so i followed the procedures on this post :

https://forum.virtuemart.net/index.php?topic=112802.0

What happens is this, i add a new price ( foto1 ) the group "Agencia" is supposed to be the group with the especial price, like this nothing happens, every group is showing the normal price ( 120.4875 ), now i change the order of the prices like in foto2 and it looks ok, but when i save it looks like in foto3, don´t make sense, and this way the price i am seeing in all groups including guests, is the especial price "86.4875" that should be only visible for "Agencia" shoppergroup.

Can you guys please help me please, what am i doing wrong ?

Thanks