Date prompt taking as number

Hi All,

We have a date prompt in the webI report. it shows the last prompt value in number and if we pass the date to the parameter we are getting below error. if we refresh the report with out change the date prompt it runs and gets the data.

We are refreshing the reports from BI launch pad.

Database error: ORA-00932: inconsistent datatypes: expected DATE got NUMBER

. (IES 10901)

Could you please help us to solve this issue.

we are having SAP BO 4.0 SP 4 in linux. Client tools SAP BO 4.0 SP 5 patch 0.

Regards,

Sreeni