If I write a function in my .bashrc that I can invoke through an alias:

alias myalias='f(){ echo $EXPORTED_VAR/run_script.sh /usr/local/software_dir/DIR2024a ; unset -f f; }; f'

and then I call this alias in my bash terminal, I can see it echoed in my terminal but it is not executed. If I copy and paste the same echoed text in my terminal, then the script is executed. I don’t even need source or . before the executable.

Why is it so and how can I modify my alias/function?