Showing custom tooltip in crystal report

I am working on CrystalReport.net.
On report page I have four ole objects (images) and I want to display custom tooltip for each of those.
I have set tooltip text by following steps:
- Right click on image and select option 'Format Object'
- In papup window, select tab 'Common'
- Go to formula link in front of option 'Tool Tip Text'
- Set formula to custom string. Then save and close window.
- Save report file
I have also set property 'EnableToolTips' of 'CrystalReportViewer' object in code, i.e. CrystalReportViewer.EnableToolTips = true;

When I view the report in web browser, it shows tooltip 'Image' for all ole objects.

Any one has information about this.

[725 byte] By [SachinDevre] at [2008-1-7]