Any reason why you want to add space ?
If it is for alignment ? Can you not align centred and get a good view for the different column names ?
Jyothi asks a valid question.
But to answer your question directly, yes, your calc will result in the specified text string based on the value of the parameter. You will need to make sure that the user cannot navigate to a given dashboard without the parameter having the expected value, of course.
Could you show us a picture of the dashboard?
A workaround I've used is to make everything a floating object - then I can add text or sheets with the soul purpose of being used as a title wherever I please!