VBA to enter Excel text into webpage iframe

[yuyyp445]

Currently VBA logs me in and navigates to webpage with entry fields. (first of all, maybe I am not using right src to call on elements, since there are iframes. IDK) Then I need to enter text (numbers and letters) into different entry fields. So basically need to automate info from Excel cell to webpage entry fields, rather than have a user manually type in info. Below is source code of iframe and element I need to enter information into.

...this is the iframe:

******** width="100%" height="100%" src="/GC3/glog.webserver.util.BodyServlet/nss?ct=508213585" scrolling="auto" frameborder="0" id="mainBody" name="mainBody"> *********>

.....then there are a bunch of divs and tbody... then the textbox I need to enter information into is "ob_line/attribute19". See below:

<div class="fieldCont">
  <div class="gridHeadLabel">Trailer#</div><input type="hidden" name="default_grid_value_ob_line/attribute19" value="">
  ********>
    new GridField('management_main', 'ob_line/attribute19', 'Trailer#', 'ob_line_grid', 'fieldText');
  *********><input type="hidden" name="fieldName_ob_line_grid" value="ob_line/attribute19"><input type="hidden" name="fieldType_ob_line_grid" value="fieldText"><input type="text" name="ob_line/attribute19" nowrap="true" size="18" value="" maxlength="101"
    onchange="this.value=this.value.toLocaleUpperCase();" onblur="this.value=this.value.toLocaleUpperCase();" onfocus="return false;">
  ********>
    new StringField('management_main', 'ob_line/attribute19', 'Trailer#', 101, 'ob_line_grid', 'false', 'false', '');
  *********>
</div>

... here is my with statement. Notice how the website I am navigating to does not match src of iframe. IDK if this matters. https below opens proper window; I just want to make it known it is different in case that matters

[/FONT][/COLOR]With ie
    .Visible = True
    .navigate "https://xxxxxx.com/GC3/RapidOBCustManagementServlet?ct=1685071083&manager_layout_gid=NAM.RA_US_PPS_REQ&new=y", CLng(2048)
 
DoEvents
Loop Until ie.readyState = 4
Pause (5)
Set HTMLsrc = .document
HTMLsrc.frames("mainBody").document

.... I know this with statement is pretty much nothing, but it sends back [object] when I execute this in Immediate VBA window. This is the best I have. Everything else has just been errors... I just need help in how I step through this iframe and then enter info for element, ob_line/attribute19... After we step through iframe, do I just have to do ie.document.getElementByID("ob_line/attribute19".Value = ThisWorkbook.Sheets("Sheet1").Range("whatever cell i want").Value2