How to add date fileter in "im timeentries.. command

Hi,

I want to create the command which will give the time entries between two given dates or Time entries of given date.

I tried executing command as bellow but it doesn't work. getting an error as "Invalid option: entryDate"

>im timeentries --entryUser=<Username> --entryDate="21 Aug, 2014"

...........................................

im: MKS124819: Invalid option: "entryDate"

Usage: im timeentries options...; options are:

        --entryUser=user  A user used to select time entries

        --fields=field1[:width1],field2[:width2]... where fieldn can be any of:

createdBy,createdDate,duration,entryDate,issue,modifiedBy,modifiedDate,notes,sou

rceDisplayName,sourceName,user  The fields to display.....

Please help me with this.