Image Refreshing Issue in SAP MII 12.2.6

Hi experts,

     i am using SAP MII 12.2 SP6 for my project purpose.

     In my project i have requirement as to show the machine's downtime value in Speedometer.

     For that i am using Transactions with action blocks are 1. Sql query 2. Animation renderer 3. Image saver.

     I can able to save that image as .png format by giving image saver location as "db://Projectname/CM/WEB/Foldername/imagename.png".

     i can use this .png image in my irpt pages to show the speedometer image in IE.

     if i execute the the transaction related this image, the old image was replaced by new value based on the query result.

     but in IE, the new image not getting loaded(In MII Db the new image updated perfectly)

     Its shows old image only.

     is there any option to configure MII/IE to aviod image cache.

     I need help to solve this issue.

     Thanks in advance!

With warm Regards,

Santhosh K