How to change the datatype of parameter in SSRS report?

I create a new SSRS report in AX 2012 using Query, in that report I am passing two parameter as a From Date and To Date. For this in visual studio their is only one datatype as a DATETIME. so in that parameter it is reflecting as a date and time both. I need to change that data type DATETIME to DATE only. So please help me if anyone klnow about this.