Referencing a Cell .send Syntax Error // Web Scraping - vba

Question

Background/objective: Web Scrape: Problem with the Syntax using the .send
I am attempting to send the last name and first name from a list of names in two columns of cells, I am coming across Syntax Errors as it does not recognize the cell and assumes the range is the "name"
code:
The syntax error begins on the "last" and "first" line under the .send, as I am attempting to send a cell value rather than type in the name. What is the correct formatting when referencing a range of cells?
Option Explicit
Sub Test()
Dim sContent As String
Dim i As Long
Dim j As Long
Dim aHeader() As String
Dim aRows() As String
' Retrieve HTML content via XHR
With CreateObject("MSXML2.XMLHTTP")
.Open "POST", "http://npinumberlookup.org/getResults.php", False
.setRequestHeader "content-type", "application/x-www-form-urlencoded"
.send _
"last=Range(G:1)" & _
"&first=Range(F:1)" & _
"&pracstate=TX" & _
"&npi=" & _
"&submit=Search"

Answer 1

When you want to reference the value of a Range, is exactly as #Qharr said before. I tried doing:
' Retrieve HTML content via XHR
With CreateObject("MSXML2.XMLHTTP")
.Open "POST", "http://npinumberlookup.org/getResults.php", False
.setRequestHeader "content-type", "application/x-www-form-urlencoded"
.send _
"last=" & Range("G1").Value & _
"&first=" & Range("F1").Value & _
"&pracstate=TX" & _
"&npi=" & _
"&submit=Search"
End With
And it worked. No errors when running the code.