docs: function (precision) {
          if (this.maskerMeta.precision == precision) return;
          this.maskerMeta.precision = precision
          this.formater = new u.NumberFormater(this.maskerMeta.precision);
          this.masker = new u.NumberMasker(this.maskerMeta);
          var currentRow = this.dataModel.getCurrentRow();
          if (currentRow) {
              var v = this.dataModel.getCurrentRow().getValue(this.field)
              this.showValue = this.masker.format(this.formater.format(v)).value
          } else {
              this.showValue = this.masker.format(this.formater.format(this.trueValue)).value
          }
  
          this.setShowValue(this.showValue)
      }