dialog modifyfield -:
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class declaration:-
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class mahesh_ModifyDialogField extends RunBasebatch
{
    CustAccount CustId;

    DialogField dialogCustId;

    DialogField dialoglName;

    Dialog dialog;

}
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Dialog:-
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protected Object dialog()
{

    ;

    dialog = super();

    dialogCustId = dialog.addFieldValue(extendedTypeStr(CustAccount),"Customer","Customer");

    dialoglName = dialog.addFieldValue(extendedTypeStr(Name),"Name","Name");

    return dialog;
}
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dialogPostRun()
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public void dialogPostRun(DialogRunbase tmpdialog)
{

    super(tmpdialog);

    tmpdialog.dialogForm().formRun().controlMethodOverload(true);

    tmpdialog.dialogForm().formRun().controlMethodOverloadObject(this);

}
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filed_modified:-
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public boolean fld1_1_modified()
{

    FormStringControl control = dialog.formRun().controlCallingMethod();

    boolean isFieldModified;

    ;

    isFieldModified = control.modified();

    if(isFieldModified)

    {

    dialoglName.value(custTable::find(control.text()).Name());

    }

    return isFieldModified;

}
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main()
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static void main(Args args)
{

   mahesh_ModifyDialogField mah_ModifyDialogField = new mahesh_ModifyDialogField();

    ;

    if (mah_ModifyDialogField.prompt())
    {

    mah_ModifyDialogField.run();
    }

}