I pushed some Aconcagua extensions to http://smalltalkhub.com/mc/SeanDeNigris/AconcaguaAddOns/main/ The package relevant to Magritte specifically is . This gives you MAMeasureDescription, which represents an Aconcagua Measure. It mostly acts like a number field mapped to its amount. You just have to tell it which unit to use to convert the amount number into a Measure. Example usage: MAMeasureDescription new accessor: #replacementPrice; label: 'Replacement Price'; unit: AmDollar new; yourself Then, you can type 100 in a Magritte form and "100 dollars" will be saved to the model. Enjoy! ----- Cheers, Sean -- View this message in context: http://forum.world.st/Aconcagua-Magritte-tp4820928.html Sent from the Magritte, Pier and Related Tools mailing list archive at Nabble.com.