--- title: Using the PRE Field Attribute on NPR Report Writer Screens description: PRE field check is executed after the end-user enters a non-printable character and executes even if the end-user enters a new non-nil value. --- [![IPeopleHealthcare_White](https://blog.ipeople.com/hubfs/IPeopleHealthcare_White.png)](https://www.ipeople.com/) - [Home](https://www.ipeople.com) - Products - [Professional Services](https://www.ipeople.com/products/meditech-services/) - [Downtime Product Suite](https://www.ipeople.com/products/suite) - [Benefits](https://www.ipeople.com/benefits) - [About](https://www.ipeople.com/about) - [Contact](https://www.ipeople.com/contact) - [IPeople Blog](https://blog.ipeople.com) April 11, 2022 # Using the PRE Field Attribute on NPR Report Writer Screens The PRE Field Checks occur before the FCL Field Checks.  They are executed after the end-user enters a non-printable character.  Unlike FCLs, they execute regardless of whether or not the end-user entered in a new non-nil value. Here is an example (MAGIC) that converts whatever the end-user enters from lowercase to uppercase:   `PRE1=A~$L.TO.U^A` Here is the same example but for C/S:   `PRE1=A@Trl2u^A` Here is an example for MAGIC that automatically exits a screen if the end-user does not enter any value into a field: `PRE1=IF{@Not(A) 231^/Z^t}` Here is that sample example for C/S:   `PRE1=IF{@Not(A) 27^/Z,1^/(.S).SKIP.EXIT}` This example will work for both MAGIC and C/S.  It pops up the exit prompt if no value is entered:   `PRE1=IF{@Not(A) 27^/Z}` Topics: [MEDITECH](https://blog.ipeople.com/topic/meditech), [Magic System](https://blog.ipeople.com/topic/magic-system), [NPR Report](https://blog.ipeople.com/topic/npr-report), [CS System](https://blog.ipeople.com/topic/cs-system) ## You Might Also Enjoy #### [Using the BFI Field Attribute on NPR Report Writer Screens (MAGIC and C/S)](https://blog.ipeople.com/using-the-bfi-field-attribute-on-npr-report-writer-screens-magic-and-c/s) BFI stands for Before Input. BFI attributes can come in pairs, just like FCL attributes. ... #### [How can I use the NPR Report Writer to launch Windows applications from MEDITECH CS?](https://blog.ipeople.com/how-can-i-use-the-npr-report-writer-to-launch-windows-applications-from-meditech-cs) There are two NPR Macros that can either launch a PC-based executable or automatically ... #### [Documenting NPR Field Attributes, Line Attributes and Footnotes](https://blog.ipeople.com/documenting-npr-field-attributes-line-attributes-and-footnotes) Entering documentation on Field Attributes, Line Attributes, and Footnotes can come in ... #### [Using WITH=START as a Field Attribute](https://blog.ipeople.com/using-withstart-as-a-field-attribute) WITH is a Field Attribute that determines when a field should be evaluated during a ... #### [MAGIC function for returning the number of leading characters](https://blog.ipeople.com/magic-function-for-returning-the-number-of-leading-characters) l (that's a lowercase L) is the MAGIC function for returning the number of leading ... [![IPeopleHealthcare_FullColor](https://blog.ipeople.com/hubfs/IPeopleHealthcare_FullColor.png)](https://www.ipeople.com/) #### CONTACT - [+1-214-222-1125](tel:+1-214-222-1125) - [support@ipeople.com](mailto:support@ipeople.com) - [sales@ipeople.com](mailto:sales@ipeople.com) #### [JOIN OUR TEAM](https://ipeople.bamboohr.com/jobs/) #### FOLLOW - [![Facebook](https://blog.ipeople.com/hubfs/Facebook.svg)](https://www.facebook.com/IPeoplehealthcareTX) - [![Instagram](https://blog.ipeople.com/hubfs/Instagram.svg)](https://www.instagram.com/interfacepeople/) - [![Linkedin](https://blog.ipeople.com/hubfs/Linkedin.svg)](https://www.linkedin.com/company/ipeople-healthcare) - [![Twitter](https://blog.ipeople.com/hubfs/Twitter.svg)](https://twitter.com/InterfacePeople) - [![email_icon](https://blog.ipeople.com/hubfs/email_icon.svg)](mailto:support@ipeople.com)   ![](https://blog.ipeople.com/hubfs/IPeople_2022_Aug/Images/Home/arrow-up.png)