VBA Reading Cell Value As Variable Definition Rather Than Text - excel

Question

My coworkers often have to send out invites for interviews (up to dozens at a time). I am writing a macro to help them autogenerate Outlook meeting invites based on all of the interviewees' information, which we store in an Excel data file.
E.g., "Dear [INSERT NAME], We would like to invite you to an interview about [INSERT SUBJECT] on [INSERT DATE]. Please call into the interview using [INSERT PHONE NUMBER] and be prepared to talk about patients with [INSERT CONDITION]."
Because my coworkers do not know VBA I'm trying to have them write it in an input sheet and have the program read it and the formatting and store it in a variable called MeetingInviteBody. So I need to take a cell's value and read it as a variable definition. The problem is the entire thing is entered as a string, even if the cell's contents are part string and part reference to another variable. Is there a way to fix this?
Thank you in advance!
Addendum: I'm hoping this will clarify what I was trying to do. This was the macro I wrote as a test:
Sub MultipleDataTypeInput()
Dim FirstLineofText As Variant
Dim PhysicianName As String
PhysicianName="Dr. Smith"
FirstLineofText=Sheets("Sheet1").Cells(1,1).Value
MsgBox(Prompt:=FirstLineofText)
End Sub
I put "Dear" & PhysicianName & "," in cell A1, What I was hoping was for Excel to then read the macro as
FirstLineofText="Dear" & PhysicianName & ","
If that happened the MsgBox would say "Dear Dr. Smith,"
Instead the prompt was ""Dear " & PhysicianName & ",""
Does this make sense?

Answer 1

One way to do this would be to use the replace function in VBA.
However, in cell A1, write "Dear PhysicianName," and get rid of your & concatenation. (The way you wrote it would work if you were writing it strictly in VBA. The code would concatenate the values together. For example: FirstLineofText = "Dear " & PhysicianName & ",")
Sub MultipleDataTypeInput()
Dim FirstLineofText As Variant
Dim PhysicianName As String
PhysicianName="Dr. Smith"
FirstLineofText=Sheets("Sheet1").Cells(1,1).Value
FirstLineofText = Replace(FirstLineOfText,"PhysicianName",PhysicianName)
MsgBox(Prompt:=FirstLineofText)
End Sub
I suggest this way because you said the coworkers are writing their own scripts and i didn't want to suggest an entire new methodology as it may confuse you. That said, I think there are way more efficient ways to design this.

Answer 2

i think that you have your logic backward
you probably want this
Sub MultipleDataTypeInput()
Dim PhysicianName As String
Dim PatientName As String
PhysicianName = Sheets("Sheet1").Range("A1").Value ' this cell should hold "Dr. Smith"
PatientName = Sheets("Sheet1").Range("B1").Value
MsgBox "Dear" & PhysicianName & ", We would like to invite you to an interview about " & PatientName
End Sub