Passing variables from shell script to another

Hi all,
I've just started to learn shell programming. I have 2 scripts and
wont to pass some variables from script1 to script2
exp:
Script1 is:
#!/bin/sh
echo "Enter 3 data"
read tmp1 tmp2 tmp3

.. ./script2.sh $tmp1 $tmp2 $tmp3
exit 0

script2 is:
#!/bin/sh
tst_fct (){
var1=$1
var2=$2
var3=$3
echo "var1=$var1, var2=$var2, var3=$var3"

}
exit 0

as result I got:
$ ./script1.sh
Enter 3 data
foo bar nothing
var1=, var2=, var3=

why this doesn't work ?
thanks in advance
.