Can I export a variable to the environment from a Bash script without sourcing it?

Suppose that I have this script:

export.bash:

#! /usr/bin/env bash
export VAR="HELLO, VARIABLE"

When I execute the script and try to access to the $VAR, I don’t get any value!

echo $VAR

Is there a way to access the $VAR by just executing export.bash without sourcing it?