Bind CHOP not getting values correctly

hi everyone;

something is happening with the use of the bind chop in the situation below that i cant figure how to solve it:

i am connecting 2 chops into a bind chop and changing the reference by its name. below would be the right configuration:

changing the first input maintains the setup correct:

but, when i get back to the first configuration, some parameters dont get the values i am sending by dattochop. in this case, ambar would be 0 but is getting 130, that i think is the value of channel 3 from the last input. the result is as below:

is there anyway that the bind chop always gets the right reference from those chops?

thank you!!

misinformation of myself
the correct way would be by Composite and not Bind.