Upper case function in MDX

Hi Experts,

I would like to convert Upper cases to First Letter Upper remaining Lower and where space Occurs then Upper and Lower.

at the Moment I have letters like this JOHN BRAIN

So I would like to convert them into John Brain

this is my code

WITH MEMBER [Measures].[ParameterCaption] 
AS LCASE([Dim_Sales].[Name].CURRENTMEMBER.MEMBER_CAPTION )

SELECT {[Measures].[ParameterCaption]} 
ON COLUMNS , 
[Dim_Sales].[Name].[Name]

  DIMENSION PROPERTIES 
    MEMBER_CAPTION
   ,MEMBER_UNIQUE_NAME
   ON ROWS  

FROM [Cube] 

Can anyone Guide me through please

Thanks,

RK