Whenever you find a problem in hiding parameters that contains same value every time in SAP Business Objects module, no need to get panic. You just ought to hide the “To_Time” parameter that is within the main report. For this first of all you will have to ought a data source for the container report. The report that contains two sub reports is known as container reports. Than firstly the same data source which will be identical as first sub report will be needed by container report (which will be a main report).
After that you have to produce a bunch on the complete field and place each and every sub report in cluster header and therefore the alternative one within the cluster header b.
Besides this you ought to link each sub reports on the complete field, thus once you head for the modification of the sub report links, with the exception of all the links that you have done earlier, you ought to add a Brand field and then you have to link it to the complete field with in the sub report.
Next you have to do following steps:
1) You have to produce a blank report.
2) Now use this code “ctime (09, 10, 30)” to produce a formula within the main report.
3) After that you have to insert the report having from time and to time parameters as a sub report within the report header.
4) Than right-click the sub report and then select modification sub report links and then move the above formula to the panel on the proper and you will see that at the bottom where you will get the “sub report parameter field to use” and then choose the “To_time” parameter.
So, I think after applying these simple steps you'll be get solve your problem in just a little time... :)