I have been reading about and messing with the 17bII+ solver. I use it for financial work (at a bank) and for college. I want to use L() and G() but they seem very buggy. I am not a programmer by any stretch, but I read on this forum about initializing variables. Would someone mind explaining to me why I can put in a simple calculation like:

Z= L(A:B*2)+G(A)

If I use 5 for B it returns an answer of 10.

If I try to (I think this is how it's done?) initialize by a seperate calculation of:

Y=A+B

Then it returns the correct answer of 20; but if I try clear the inputs and try to enter say 30 for z and solve for B I get bad Guesses or Overflow. Regardless to say I am quite confused and any insight would be appreciated.