Unable to hit button and download file using excel vba on web page

[SamadhanG]

I have below code which opens web page, calls JavaScript function but doesn't hit "OK" button. Next I want to save .csv file by calling another function.

[/FONT][/COLOR]Option Explicit 
Sub SaveCsv() 
    Dim str1, str2, str3, str7, URL As String 
    Dim ie, frm As Object 
    Dim i As Long 
    Dim FF As Integer 
     [COLOR=darkgreen]'Dim elems As IHTMLInputTextElement[/COLOR]
    Dim wb As WebBrowser 
    Dim objElement As Object 
    Dim objCollection As Object 
    Dim button, goBtn As Object 
     
     
    On Error Resume Next 
    Application.ScreenUpdating = False 
     
     
    URL = "https://webtac.industrysoftware.automation.siemens.com/webpr/webpr.php?objtype=frames&g_userid=a3rgcw&g_session_id=7302840" [COLOR=darkgreen]'for TEST[/COLOR]
     
     
    Set ie = CreateObject("Internetexplorer.Application") 
    ie.Visible = True 
    ie.Navigate URL 
     
     
    Do Until ie.ReadyState = 4 
        DoEvents 
    Loop 
     
     
    ie.Navigate ("javascript:parent.gotoSearch('advanced');") 
     
     
    str1 = "31 - Jan - 2001" 
    str2 = "28 - Nov - 2017" 
    str3 = "NX" 
    str7 = "External" 
     
     
    ie.Document.getelementsbyname("openedFrom_dateText")(0).Value = str1 
    ie.Document.getelementsbyname("openedTo_dateText")(0).Value = str2 
    ie.Document.getelementsbyname("product_family")(0).Value = str3 
    ie.Document.getelementsbyname("pr_type")(0).Value = str7 
     
     
    Do 
    Loop While ie.Busy 
     
     
    ie.Document.all.Item 
    Call ie.Document.parentWindow.execScript("onSubmitFunction()", "JavaScript") 
     
     
    Do 
    Loop While ie.Busy 
     [COLOR=darkgreen]' Hit OK button not working[/COLOR]
    Set goBtn = ie.Document.getElementByvalue(" OK ") 
    goBtn.Click 
     
     
    Set button = ie.Document.getElementByname("ok") 
    button.Click 
     
     
    ie.Quit 
    Set ie = Nothing 
    Application.ScreenUpdating = True 
End Sub [COLOR=#242729][FONT=Arial]

Html button code:

[/FONT][/COLOR][COLOR=#333333]<input type="button" name="ok" id="ok" value=" OK " *******="onSubmitFunction()">
[/COLOR][COLOR=#242729][FONT=Arial]

Csv file save code:

[/FONT][/COLOR][COLOR=#333333]<a href="javascript[/COLOR][COLOR=#333333]:getResultDataFile('csv')">[Comma-Delimited Text (CSV)]</a> [/COLOR]

[COLOR=#242729][FONT=Arial]