Type Mismatch Run Time error 13 for excel VBA - vba

Question

I have requirement to write some function which will accept Range as input and I need to return value of first non empty cell. I have tried in one excel sheet and finding non empty cell was working fine. When I try with my project excel file it was not working. Basically for Find method of Range I am getting runtime error 13. Check below code and let me know what is the issue. I have noticed even in when I put Range.Row property it make "Row" as row in code ( in below code see Target.row).
Sub Btn_GenerateChartClicked()
If Range("E9") = "Scatter" Then
MsgBox "Scatter is selected"
Dim str As String
Dim rng As Range
Set rng = Range("B12:I12")
str = FindNonEmptyCellFromRange(rng)
' MsgBox str
Else
MsgBox "Bar is selected"
End If
End Sub
Function FindNonEmptyCellFromRange(Target As Range) As String
Dim ws As Worksheet
Set ws = Sheets("Benchmarking_Project")
Dim foundRange As Range
Set foundRange = Target.Find("*", Cells(Target.row, 1), xlFormulas, , xlByColumns, xlPrevious)
'Dim cellValue As String
'cellValue = foundRange.Value
FindNonEmptyCellFromRange = "Test"
'cellValue
End Function

Answer 1

You can't find a target.
use Cell.Find and then once you have the cell selected use Target.Address to get the address of the cell
So your CellValue would become:
CellValue = FoundRange.Address
Although, your question is a little vague as your not doing anything practicle with this UDF anyway

Answer 2

Your question does not provide enough details and the function call does not return the non empty cell. Whatever happens your function will return only Test.
Anyway when going through the code, your range has a single row in it.
Issue seems to be with the following code
Set foundRange = Target.Find("*", Cells(Target.row, 1), xlFormulas, , xlByColumns, xlPrevious)
There is no need to specify the After Parameter Cells(Target.row, 1)
After parameters corresponds to the position of the active cell when a search is done from the user interface. Notice that After must be a single cell in the range. Remember that the search begins after this cell; the specified cell isn’t searched until the method wraps back around to this cell. If you do no specify this argument, the search starts after the cell in the upper-left corner of the range.
Try to change that code to
Set foundRange = Target.Find("*", , xlFormulas, , xlByColumns, xlPrevious)
The following code may work for you
Sub Btn_GenerateChartClicked()
If Range("E9") = "Scatter" Then
MsgBox "Scatter is selected"
Dim str As String
Dim rng As Range
Set rng = Range("B12:I12")
str = GetFirstNonEmptyCell(rng)
' MsgBox str
Else
MsgBox "Bar is selected"
End If
End Sub
Public Function GetFirstNonEmptyCell(Target As Range)
Dim startCell As Range, firstNonEmptyCell As Range
For Each c In Target.Cells
If Trim(c.Value) <> "" Then
Found_Address = c.Address
Exit For
End If
Next
GetFirstNonEmptyCell = Found_Address
End Function

Answer 3

Ian your suggestion about not to use Cells(Target.Row,1) in Find method is right. I got my mistake. In that I have put column index as 1 but it should be 2 because my selected range is from Column B which means column index 2. So I got actually error because there is no column index 1 in that range. So if I put 2 instead of 1 in above mentioned call then it is working fine. Yes your right that I was not returning actually value of last non empty cell as that was my R&D code I kept changing it. So while posting it I forgot to change it. Thank you all for your reply