How do I compare WarrantStatusTime with current time?

I have the if statement that I need help with.
What I am trying to do is check inside xml document in objXMLInputDoc to see if the NewWarrantStatus/WarrantStatusTime is less than current time.

In my if statement I put < 4 which is I think should be 4 minutes... but am not sure if that's correct.

How do I do this?
objXMLInputDoc has the following xml

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<UpdateWarrantStatus>
    <WarrantNumber>
        <ID>2</ID>
    </WarrantNumber>
    <CurrentWarrantStatus>
        <WarrantStatusTypeText code="RECALLED">Recalled Inactive</WarrantStatusTypeText>
        <WarrantStatusDate>2018-10-16</WarrantStatusDate>
    </CurrentWarrantStatus>
    <NewWarrantStatus>
        <WarrantStatusTypeText code="IBARCLR">Warrant Cleared by Arrest</WarrantStatusTypeText>
        <WarrantStatusDate>2018-10-17</WarrantStatusDate>
        <WarrantStatusTime>12:10:00</WarrantStatusTime>
        <WarrantStatusComment>New status</WarrantStatusComment>
    </NewWarrantStatus>
</UpdateWarrantStatus>

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What I have tried

Code:

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dtmNewWarrantStatusDateTime = CDate(objXMLInputDoc.DocumentElement.SelectSingleNode("msc:NewWarrantStatus/msc:WarrantStatusDate", objXMLNameSpaceManager).InnerText + " " + objXMLInputDoc.DocumentElement.SelectSingleNode("msc:NewWarrantStatus/msc:WarrantStatusTime", objXMLNameSpaceManager).InnerText)
        'I am using < 4 thinking this can be 4 minutes earlier than current time but it is not working
        If ((dtmNewWarrantStatusDateTime.Date = Date.Today) And (DateDiff(DateInterval.Minute, Date.Now, dtmNewWarrantStatusDateTime) < 1)) Then
        Else
            strErrorResponse = "A Warrant Status Date and Time combination is invalid because time is in the future. i.e more than 4 minutes."
            objXMLInputDoc.DocumentElement.SetAttribute("error", strErrorResponse)
        End If

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It isn't clear which way the 4 minutes should apply, but I think this (perhaps with the .AddMinutes moved to DateTime.Now) does what you want:

Code:

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        If ((dtmNewWarrantStatusDateTime.AddMinutes(4) < Date.Now) Then

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The < 4 was just me trying to see what would happen. I do not need to add any minutes.
What I need is to just check if the dtmNewWarrantStatusDateTime is less than current time i.e Date.Now

In that case the simple version should be fine:

Code:

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        If (dtmNewWarrantStatusDateTime < Date.Now) Then

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However, as you have no code before the Else, it would be better to invert the comparison (change < to >= ) and remove the Else, ie:

Code:

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        If (dtmNewWarrantStatusDateTime >= Date.Now) Then
            strErrorResponse = ...

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