Calling a macro inside another macro

I have successfully run multiple macros in separate sub routines but I am now trying to run a macro (in the same workbook) at the end of another macro with code.

here is an abridged version of the code

Option Explicit
 Sub Big_Macro()
    Dim rData As Range
    Dim lNextRw As Long
        
'I have deleted my steps 1 & 2 in the code (they work)
' Step 3 clear Update Results Form

    Sheets("Update Results").Select
    Range("G10:I21").Select
    Selection.ClearContents
    Range("i51:I62").Select
    Selection.ClearContents
    Range("F5").Activate
    Selection.ClearContents
    
   Range("c1").Select
   
'Step 4 run the update results macro

Call Other_macro
End Sub

Can someone advise what I am doing wrong with the last command to Call the other macro. I tried AplicationRun but that didn't work.

Any assistance is greatly appreciated.

Mike