RegisterOverrideMethod was called twice for the same object for method Dynamics Ax 2012

I was developing the report by adding UI Class and building the drop down list to select multiple customer.

When I try to bind, DataSet of SSRS report to data provider class, it shows following error.

RegisterOverrideMethod was called twice for the same object for method ‘textChange’. You can only override a method once per instance.

On Exploring I found that I used the Same dialog field in two lookup methods.

SysLookupMultiSelectCtrl::constructWithQuery(this.dialog().dialogForm().formRun(), dlgCustAccount.control(), query, false, selectedFields);