This is a channel for those developing drools itself, the lists page clearly specifies for you to join the USER mailing list http://www.jboss.org/drools/lists That book is many years old, guvnor has changed a lot since then, there is no updated version for that book title. I suggest you look at the documentation that comes with the release you are using. Please ask any further questions on the USER mailing list. On 15/05/2012 11:52, zeeshan khan wrote: Hi Team ! Since yesterday only I started learning Drools with the help of Google and *JBOSS DROOLS BUSINESS RULES pdf file*. I faced many problems to understand the concept but now its going smooth. But the problem is the *version of PDF file of the book* and the *Govener version*. *Its quite different*. I request you all to please provide me the latest version of PDF as I am unable to find on net. The problem I am facing is to put the formula as given in the screen shot in the book. I am unable to put the *formula* as described in JBOSS DROOLS BUSINESS RULES pdf file on page no. 102.....the formula is *salesValue-10 as the box is not capable of taking cahracters. *It is taking only integer. Thanks in Advance for all the help and material !!!! _______________________________________________ rules-dev mailing listrules-dev@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-dev _______________________________________________ rules-dev mailing list rules-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-dev