Need Help On Making An Expression (Simple)

OK, I have 3 fields in my table: First Name (FNAME), Middle Name (MNAME), and Last Name (LNAME). The table is named EMPLOYEES and I need to make an expression that will give me an employees full name (LNAME, FNAME MNAME) in that structure.

Now I created a new Query which included the three names, but I cannot figure out how to do the expression for the full name, it keeps giving me errors.

I tried using the builder and doing basically:
[LNAME] & ", " & [FNAME] & " " & [MNAME]

That gave me an error saying it contained incorrect expressions or something. I also substituted + for &, and "AND" for &, and still got those errors.

I only have one report where the name format needs to be like this, and thought I could use a simple query to collect the data and format the name. If anyone can help me it would be greatly appreciated.

Thank You!