shell - Passing value from a file to awk script -

i trying pass columns file awk script , 1 it.the input text file "prac.txt" contains:

shashank 12 ram 13 shyam 44

the awk script "aweg" contains:

#!/bin/awk -f { i=$2 print "val: ",$i+1; }

the command firing is:

more prac.txt |./aweg

i getting below output:

val:  1 val:  1 val:  1

please point out mistakes.

the awk variables not called dollar sign. hence, use:

print "val: ",i+1;               ^               no $

all together, yields:

$ awk -f aweg.awk prac.txt    # note no need `more prac.txt`... val:  13 val:  14 val:  45

And