Hi,
I was able to solve it on by doing simple adjustments on my code. I would not be able to attach example due to some my organization's policy.
I simply solved it by putting making value of input box as cell dependent.
TextBox1.Value = Worksheets("Sheet2").Range("$A$1").Value
So whenever A1 cell of sheet2 changes it changes the inputbox value which inturn change value of another cell.