No dataset padrão ao passar a data no campo startDateProcess ele não retorna conforme o filtro na constraints conforme exemplo abaixo
var dt_inicio = new Date().toLocaleString().split(" ")[0] + " 00:00:00";
var dt_fim = new Date().toLocaleString().split(" ")[0] + " 23:59:59";
var c1 = DatasetFactory.createConstraint("ProcessId", 'COZ12', 'COZ12', ConstraintType.MUST);
//var c2 = DatasetFactory.createConstraint("status", '2', '2', ConstraintType.MUST);
//var c3 = DatasetFactory.createConstraint("startDateProcess", dt_inicio, dt_fim, ConstraintType.MUST);
var constraints = new Array(c1);
var dataset = DatasetFactory.getDataset("workflowProcess", null, constraints, null);