cfgridbinding and storedprocedure

I am not able to use cfgrid bind to a method that uses a stored procedure

If I used the grid without the bind it works find

Appreciate your help

my stored procedure is as follows. It works fine by itself

PROCEDURE [dbo].[usp_myproc]

(

@SectionID

int,

@gridsortcolumn

nvarchar(30),

@gridsortdirection

nchar(4)

)

begin

xxxxxx

end

______________________

my component is

section.cfc

has the following function

<cffunction name="cfn_myfunction"

output="yes"

returntype="query"

access="remote">

<cfargument name="SectionID" type="numeric" required="yes">

<cfargument name="gridsortcolumn" type="string" required="yes">

<cfargument name="gridsortdirection" type="string" required="yes">

<cfstoredproc

procedure="usp_myproc"

datasource="#application.dsn#" returncode="no" >

<cfprocparam value="#arguments.SectionID#"

type="in"

cfsqltype="cf_sql_integer"

null="no">

<cfprocparam value="#arguments.gridsortcolumn#"

type="in"

cfsqltype="cf_sql_varchar"

null="no">

<cfprocparam value="#arguments.gridsortdirection#"

type="in"

cfsqltype="cf_sql_varchar"

null="no">

<cfprocresult name = "RS_myproc">

</cfstoredproc>

<cfreturn queryConvertForGrid(RS_myproc, page, pageSize) />

</cffunction>

_____________________________________________________

my cfm page is as follows

<cfform name="tryme">

<cfgrid name="mygrid",

format="html",

sort="yes",

bind="cfc:component.data.section.cfn_myfunc ({cfgridpage},{cfgridpagesize},

{cfgridsortcolumn},{cfgridsortdirection})",

pagesize="7" ,

selectmode="row">

<cfgridcolumn name="UserID" display="No"/>

<cfgridcolumn name="FIRSTNAME" header="FIRST NAME" >

<cfgridcolumn name="LASTNAME" header="LAST NAME" >

<cfgridcolumn name="Email" header="Email" >

</cfgrid>

</cfform>

______________________________

it does not work

It works if I used an embedded query instead of the stored procedure

how can I resolve that