Set default vB code {option} for when not set?

[parad0xx]

I am trying to make a vB code that would work like this...

{param}

would display: Neat! {param}


then if the option is set, it would replace the "Neat!" with the set option.

So...

{param}


would display: {option} {param}


Thank you for your time.

[parad0xx]

Is this not possible?