Print Form NextGen 7.0, eZee FrontDesk 7.0Invoice, print, Index and length must refer to location within the string, Index, Index and lengthSnehal Error: Index and length must refer to location within the string. Parameter name: Length [convertDate] Problem: How to Solve: eZee Frontdesk >> Open Room >> Folio Summary >> Edit folio >> Save again and now check invoice folio