Proc Returning All Records

Following Proc is returning all records.I have passed any value to parameters but no luck.


CREATE PROCEDURE GetAllUsers(
@persontype varchar(100)="",
@name varchar(100)="",
@adddatetime datetime="",
@activeaccount int =-1,
@country varchar (20)=""
)
AS
declare @cond varchar(1000) ;

if @persontype<>""
begin
set @cond= @cond+"and persontype="+@persontype
end
if @name<>""
begin
set @cond= @cond+"and (charindex("+@name+",x_firstname)>0 or charindex("+@name+",x_lastname)>0 or charindex("+@name+",x_email)>0) "
end
if @activeaccount<>-1
begin
set @cond= @cond+'and activeaccount='+@activeaccount
end
if @adddatetime<>""
begin
set @cond= @cond+'and adddatetime='+@adddatetime
end
if @country<>""
begin
set @cond= @cond+'and x_country='+@country
end
print @cond
exec( " select * from users where 1=1 "+@cond)
GO



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