Executing string as property to set values in SAP with VBS - vbscript

Question

I'm trying to automate a list of property set commands in SAP GUI 740, for example, to set the "text" property of a field to "12345" as shown below.
If Not IsObject(application) Then
Set SapGuiAuto = GetObject("SAPGUI")
Set application = SapGuiAuto.GetScriptingEngine
End If
If Not IsObject(connection) Then
Set connection = application.Children(0)
End If
If Not IsObject(session) Then
Set session = connection.Children(0)
End If
If IsObject(WScript) Then
WScript.ConnectObject session, "on"
WScript.ConnectObject application, "on"
End If
Function Overall()
session.findById("wnd[0]/tbar[0]/okcd").text = "12345"
end function
call Overall
That works fine, as does:
Function Overall()
set control = session.findById("wnd[0]/tbar[0]/okcd")
control.text = "12345"
end function
And so does:
Function Overall()
set control = session.findById("wnd[0]/tbar[0]/okcd")
with control
.text = "12345"
end with
end function
What I need to figure out is how to pass such a function the property name and value as strings and have it set those. For instance:
Function Desired(Input)
GUI_ID = Input(0)
Property_to_change = Input(1)
Value_to_change = Input(2)
session.findById(GUI_ID).Property_to_change = Value_to_change
end function
The best option seems to be CallByName, such as below, but I get a type mismatch error.
Function Desired(Input)
GUI_ID = Input(0)
Property_to_change = Input(1)
Value_to_change = Input(2)
set control = session.findById(GUI_ID)
CallByName control, Property_to_change, vbSet, Value_to_change
end function
And the error:
Microsoft VBScript runtime error: Type mismatch: 'callbyname'
I don't know if this is a simple syntax issue, or if I am using this completely wrong. I'm also not invested in CallByName, so if there is a better or easier way, I'm all for it :)
Thank you everyone!

Answer 1

In a VB script, the task could be solved as follows.
for example:
Function Desired(Input_0, Input_1, Input_2)
GUI_ID = Input_0
Property_to_change = Input_1
Value_to_change = Input_2
set control = session.findById(GUI_ID)
if Property_to_change = "text" then
with control
.text = Value_to_change
end with
session.findById("wnd[0]").sendVKey 0
end if
if Property_to_change = "setFocus" then
with control
.setFocus
end with
end if
'etc.
end function
If Not IsObject(application) Then
Set SapGuiAuto = GetObject("SAPGUI")
Set application = SapGuiAuto.GetScriptingEngine
End If
If Not IsObject(connection) Then
Set connection = application.Children(0)
End If
If Not IsObject(session) Then
Set session = connection.Children(0)
End If
If IsObject(WScript) Then
WScript.ConnectObject session, "on"
WScript.ConnectObject application, "on"
End If
session.findById("wnd[0]").maximize
call Desired("wnd[0]/tbar[0]/okcd", "text", "12345")