ComboBox problem

Hi
I wrote a code to select a text/item in "combobox" using "ControCommand" It opens combobox but fails to find and select the text

The code is here

ControlCommand("Network Design Wizard -- SCL File Setup","-Select-","WindowsForms10.COMBOBOX.app.0.2bf8098_r12_ad12","ShowDropDown","")
ControlCommand("Network Design Wizard -- SCL File Setup","-Select-","WindowsForms10.COMBOBOX.app.0.2bf8098_r12_ad12", "FindString", 'test')
ControlCommand("Network Design Wizard -- SCL File Setup","-Select-","WindowsForms10.COMBOBOX.app.0.2bf8098_r12_ad12", "SelectString", 'test')


Window info :

---

>>>> Window <<<<
Title: Network Design Wizard -- SCL File Setup
Class: WindowsForms10.window.8.app.0.2bf8098_r12_ad1
Position: 375, 206
Size: 530, 357
Style: 0x16C80000
ExStyle: 0x00010100
Handle: 0x004508FC

>>>> Control <<<<
Class: WindowsForms10.COMBOBOX.app.0.2bf8098_r12_ad1
Instance: 2
ClassnameNN: WindowsForms10.COMBOBOX.app.0.2bf8098_r12_ad12
Name: cbSclGroup
Advanced (Class): [NAME:cbSclGroup]
ID: 1837372
Text:
Position: 93, 91
Size: 114, 21
ControlClick Coords: 89, 14
Style: 0x56010243
ExStyle: 0x00000000
Handle: 0x001C093C

>>>> Mouse <<<<
Position: 185, 127
Cursor ID: 0
Color: 0xFFFFFF

>>>> StatusBar <<<<

>>>> ToolsBar <<<<

>>>> Visible Text <<<<
Select a existing SCL file from version group
Version:
Group:
Add new SCL file...
-Select-
-Select-
Cancel
Finish
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