Assign Start Index ERROR

How it works ? did i need to put it everytime at the end of sentence ?

I change the browser and the problem is the same :

Split(Split(ClientInformation,":")(1),“Client ID”)(0).Trim
Split(Split(ClientInformation,":")(1),“Client Name”)(0).Trim
Split(Split(ClientInformation,":")(1),“Client Country”)(0).Trim