How to call a Sub from another Sub dynamically - vba

Question

I have never come across this idea until now, but is it possible to set another macro to a variable within my current macro to call it from the VBA code? I have made the attempt to do so in my limited knowledge and it ain't working.
What I have is a user form that contains a combo box that is a list of reports. Then I have the selected value from that combo box matched to a specific Sub (by title). Each report has its own macro for updating each month.
I have coded the VBA of my first macro (based on a 'Run' button on the user form) to set a variable (iVal) to equal the value within the cell of the worksheet containing the matching Sub title. I was hoping I could use that variable to call the appropriate Sub title based on that value. It doesn't like the variable.
See a screenshot of the error here: https://i.imgsafe.org/a2a199edb8.png
Otherwise, I'm thinking my best option is to use an array loop. I was hoping to avoid that since this list of possible selections from this combo box is almost 50 different possibilities that could expand or diminish over time. Obviously, this would be time consuming and a challenge to manage as the list of reports and matching macros changed.
I don't even know if this is possible. This is a new VBA challenge I have never tackled before so it falls into that 'I don't know what I don't know' territory. Thanks in advance for any constructive feedback.
Private Sub Run_Click()
'Runs the Analysis
Dim ProjectWB As Workbook
Set ProjectWB = ActiveWorkbook
Dim iWS As Worksheet
Dim sName As String
Dim tName As String
Dim iName As String
Set iWS = Worksheets("Streetwise Ideas")
'Error handling for empty file fields
Application.ScreenUpdating = False
Unload Me
If TextBox1.Value = "" Then
MsgBox "Please select a Source file.", vbCritical, "Error No Source file"
If vbOK Then
UserForm1.Show
End If
Else
If TextBox2.Value = "" Then
MsgBox "Please select a Target file.", vbCritical, "Error No Target file"
If vbOK Then
UserForm1.Show
End If
Else
End If
End If
'place value of the selection from the combobox in cell D2 on "Streetwise Ideas" sheet for referencing later in the macro
iWS.Activate
Range("D2").Select
Selection.Value = cbSWIdeas
sName = TextBox1.Value
tName = TextBox2.Value
'Opens Source workbook file and sets it to variable sWB
Dim sWB As Workbook
Set sWB = Workbooks.Open(sName)
'Opens Target workbook file and sets it to variable tWB
Dim tWB As Workbook
Set tWB = Workbooks.Open(tName)
'Calls the correct macro for the combobox selection
Dim iVal As String
iVal = iWS.Range("E2").Value
If iVal <> "" Then
Call iVal
Else
'do nothing
MsgBox ("No Idea Selected.")
Exit Sub
End If
Application.ScreenUpdating = True
End Sub

Answer 1

You can use Application.Run to call a Macro by name
Sub Example()
Dim MacroName As String
MacroName = "HelloWorld"
Application.Run MacroName
End Sub
Sub HelloWorld()
MsgBox "Hello World!"
End Sub