SQL SERVER 2005-ASP.NET

I BUILT STOED PROCEDURE IN SQL SERVER  2005

AND WHEN I REU IT USING EXEC STATEMENT I GET THE FOLLOWING ERROR IN

"Error converting data type nvarchar to datetime." this error happen when change the format of date to dd-MM-yyyy

when i let it as it , no problem "MM-dd-yyyy"

can anyone help me?

i use exec statement because i faced problem with image datatype sql server 2005