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How can i format a column type math?. Formula value is loaded from the Database.

math column is not able to format values but you can use next trick


grid.setColType("ro,ro,edn[=0]");

such initialization will create a "edn" column which are capable to format data, but in same time it will be "math active column" ( because if initialized with formula), so value from data XML will be threated as formula.