Facing issue while adding a step

[MWaris97]

I am trying to add a removed step but unable to do so, I am getting the following error. Please help me

Uncaught TypeError: Illegal invocation at MStepper.activateStep (mstepper.js:451:41) at clickPenaltyVariable (BondCreationPage.js:365:44) at HTMLButtonElement.onclick (Create:466:117)

Here is how I am doing it

Inside one function
removedPenaltyStep = stepperInstace.deactivateStep(document.getElementById("removableStep_1_9_2"));

Inside another function
stepperInstace.activateStep(removedPenaltyStep)

removedPenaltyStep is global