[@substrate/txwrapper](../README.md) › [Globals](../globals.md) › ["src/methods/staking/bondExtra"](../modules/_src_methods_staking_bondextra_.md) › [StakingBondExtraArgs](_src_methods_staking_bondextra_.stakingbondextraargs.md) # Interface: StakingBondExtraArgs ## Hierarchy * object ↳ **StakingBondExtraArgs** ## Index ### Properties * [maxAdditional](_src_methods_staking_bondextra_.stakingbondextraargs.md#maxadditional) ## Properties ### maxAdditional • **maxAdditional**: *number* *Defined in [src/methods/staking/bondExtra.ts:13](https://github.com/paritytech/txwrapper/blob/38b3ce8/src/methods/staking/bondExtra.ts#L13)* The maximum amount to bond.