https request Cases getRecords

https request Cases getRecords

Hi


I'm trying to download an XML with the information of all the cases create and modify in a specific date using the following request, but I only get the ones of the current date

request: https://crm.zoho.com/crm/private/xml/Cases/getRecords?authtoken=xxxxx&scope=crmapi&lastModifiedTime=2014-08-26 00:00:00


Anny sugestion ??

thanks