Hi I am trying to build a TreeView structure base on data from speific file, here is a structure of that file: Dir1 # 0 SubFolder # 0 SubSubFolder # 0 OtherSubFolder # 0 Some not needed line 0 Dir2 # 0 SubFolder1 # 0 SubFolder2 # 0 Here i need to extract the lines where # char is found. Here is what i have so far: #include <GuiConstantsEx.au3> #include <WindowsConstants.au3> #include <GuiTreeView.au3> $sUA_Config_File = @ScriptDir &