Switch Do Rank

I'm making a SP mission. Why doesn't switch do work for this? I've tried without using strings & got invalid number in expression.

If (Rank Player == "Private") Then {Hint "Private"}; //-----Works-----//

Switch (Rank Player) Do //-----Does Not Work------//

{

   Case "Private":{Hint "Private"};
   Case "Corporal":{Hint "Corporal"};
   Case "Sergeant":{Hint "Sergeant"};
   Case "Lieutenant":{Hint "Lieutenant"};
   Case "Captain":{Hint "Captain"};
   Case "Major":{Hint "Major"};
   Case "Colonel":{Hint "Colonel"};

};

try making the cases all caps, on This page it shows them in all caps, and

Im pretty sure switch is case sensitive with strings.

Thanks, I'm sure that will do the trick. Appreciated.

One more thing. How can I realize the terrainGrid? Using hint format ["%1", TerrainGrid] returned any. Anyhow, I basically need know what the terraingrid is when a dialog pops, so I can set a combo dropdowns shown index.

Switch (TerrainGrid) Do 

        {

                  Case 50:{_Grasscontrol lbSetCurSel 0};
                  Case 48:{_Grasscontrol lbSetCurSel 1};
                  Case 25:{_Grasscontrol lbSetCurSel 2};
                  Case 12.5:{_Grasscontrol lbSetCurSel 3};

        };

I don't think there's any way to find that out. You could just set it in init.sqf so you know its start value and base the rest on that