broblems with miracl library

[Meccalloq]

I'm doing a program in C++ and I know that the following question
seems pretty simple, but I'm using the library "miracl" and I have the
problem to assign to a "Big" variable the content of a "Flash"
variable (the actual content of the Flash variable to convert is an
integer, so teoretically there should not be any problem). The inverse
passage gives no problem at all, but all the way I've tried do not
work. Do somebody knows the correct way to do it ?

Thank in advance

Meccalloq