Accessing previous value of a field
*You can try this logic in validate or modified field methods*
DictTable dictTable;
DictField dictField;
tableId tableId;
fieldId fieldId;
#DictField
PurchParmLine purchParmLine;
if(any2real(this.(_fieldId)) < any2real(this.orig().(_fieldId)))
{
dicttable = new DictTable(tablenum(PurchParmLine));
fieldId = dictTable.fieldName2Id("ReasonTableRef");
dictField = dictTable.fieldObject(fieldId);
// dictField =new DictField(tablenum(PurchParmLine), fieldnum(PurchParmLine, ReasonTableRef));
if (!dictField.isSystem() && bitTest(dictField.flags(), #dbf_visible)
&& bitTest(dictField.flags(), #dbf_mandatory))
{
info(strfmt("Field number %1 changed from %2 to %3",_fieldId,this.orig(). (_fieldId),this.(_fieldId)));
}
}
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