Excel Macro For Attaching Multiple Files To One Email

I am currently attempting to use an excel macro to allow me to send a list of files to one person. I have managed to create a dynamic list where one sheet of the workbook has the list of files and checkboxes, and as certain ones are selected they appear in a list on the 'front sheet' of my workbook, which has the button to send the email.

My front sheet is set up in a way that in cell B3 I have the desired email address, B4 contains the subject and from B5 to B30 I have the list of selected attachments (although the length of the list obviously varies depending on the amount of files selected, when all are selected the list extends to B30).

I have the below vba code that allows me to create an email with the address and subject and attaches the file address from cell B5, but I would like to attach all the files in the list and am struggling to change the code to do so.

Code:
Sub CreateMail()

Dim objOutlook As Object
Dim objMail As Object
Dim rngTo As Range
Dim rngSubject As Range
Dim rngAttach As Range

Set objOutlook = CreateObject("Outlook.Application")

[Code] ........

I can add more by creating new ranges (rngAttach1, rngAttach2, rngAttach3 etc) and setting these to their respective locations but if, for example, only two files are selected, the list only covers cells B5 and B6, so when the macro looks up the file directory in B7 (rngAttach3) it returns an error because obviously there is nothing for it to find.

I have attempted to compile a loop and change the code to the version shown below but am having no luck.

Code:
Sub CreateMail()

Dim objOutlook As Object
Dim objMail As Object
Dim rngTo As Range
Dim rngSubject As Variant
Dim rngAttach As String
Dim iLoop As Long

[Code] ....