function getValuesFromString (api: ApiPromise, value: string, si: SiDef | null, bitLength: BitLength, isSigned: boolean, isZeroable: boolean, maxValue?: BN | null, decimals?: number): [string, BN, boolean] {
  return [
    value,
    ...inputToBn(api, value, si, bitLength, isSigned, isZeroable, maxValue, decimals)
  ];