Empty field at beginning of sentence

I have a rule for the recipient's name that is inserted at the beginning of a sentence, to make it proper case:

var Var1 = "RecipientFirstName";

return ToTitleCase(Field(Var1))+",";

However, it seems that field is empty from time to time, causing the sentence to begin with a comma, then the word "space".

I'd like to add to that rule above, with another rule that says if RecipientFirstName is empty, return only the word "Space"

I should know this by now....

return (Field("RecipientFirstName") != "") ?  ToTitleCase(Field(Var1)) + "," : "";

That's close, but now when it IS populated it only returns the rule name, not the actual recipient's first name.

I need it to say

Strido, space is limited

But if that first name (strido) is missing, it returns:

Space is limited

I'm assuming you deleted this line of code that defined "Var1" when you added mine:

var Var1 = "RecipientFirstName"; 

I'm sorry – it probably wouldn't have hurt for me to specify ha.