Permit Number generation and Increment in the Infopath form via webservice and sharepoint designer

1. Implement the Permit number code in the Infopath submit button
2.   Create one custom column name as Newnumber and set NewNumber = LoadNumber after first approval button
3. Create a web service and getmaxnumber as New Number
4. kindly follow the below screen shots

Please post your comments here if you have any questions  or issues.