Validate index position is greater than -1
Validate index position is greater than -1

ontizamu/AngularTypeScriptExpenseManager,kenhowardpdx/AngularTypeScriptExpenseManager,kenhowardpdx/AngularTypeScriptExpenseManager,DanWahlin/AngularTypeScriptExpenseManager,kenhowardpdx/AngularTypeScriptExpenseManager,DanWahlin/AngularTypeScriptExpenseManager,ontizamu/AngularTypeScriptExpenseManager,DanWahlin/AngularTypeScriptExpenseManager,ontizamu/AngularTypeScriptExpenseManager