@State=("a","b","c")#the number of elements is variable
@Product=("12","13","15")
What I want to do is creating an expresion like this:
"create $Product[0]&&$Product[1]&&$Product[2]...$Product[n] -$State[0]&&$State[1]&&$State[2]...&&$State[i]"

n=number of elements of the array Product
i=number of elements of the array State