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public void getLabelsAndWidthsfromFields(List<String> fieldNames, String objectName) { labels = new List<String>(); widths = new List<String>(); try { Map<String, Schema.SObjectType> gd = Schema.getGlobalDescribe(); SObjectType sot = gd.get(objectName); Map<String, SObjectField> fields = sot.getDescribe().fields.getMap(); List<SObjectField> fieldtokens = fields.values(); for(String fn : fieldNames) { SObjectField field = fields.get(fn); Schema.DescribeFieldResult fieldDescribe = field.getDescribe(); labels.add(fieldDescribe.getLabel()); widths.add(String.valueOf(fieldDescribe.getLength() * 3)); } } catch (Exception e) { System.debug('UNABLE TO GENERATE LABELS:' + e); } }