@Condition is a parameter

I forgot to mention one thing, I am getting following warning:

The data set ‘TaskList’ contains a definition for the field ‘TaskName’. This field is missing from the returned result set...

Thanks for the reply. Now I am not getting any compile time error. However, its displaying only headings but no records.

Following is the query:

Declare @MyNewSql nvarchar(4000)

Select @MyNewSql = 'Select ...