Need help in making some fields mandatory based on one field

[Vrashikesh]

Hello There,
xml : 
<urn:AmountAccepted>?</urn:AmountAccepted> (Required if receiving by amount)

<urn:AmountCurrency>?</urn:AmountCurrency> (Required if receiving by amount)

<urn:AmountRejected>?</urn:AmountRejected> (Required if receiving by amount)

<urn:Comment>?</urn:Comment> (Optional)

<urn:DateOfDelivery>?</urn:DateOfDelivery> (Optional)

<urn:IsReceivingByCount>?</urn:IsReceivingByCount> (Required)

<urn:LineExtrinsics>?</urn:LineExtrinsics> (Optional)

<urn:NumberAccepted>?</urn:NumberAccepted> (Required if receiving by count)

<urn:NumberRejected>?</urn:NumberRejected> (Required if receiving by count)

In above xml if isreceivingbycount is true then i want to mark NumberAccepted and NumberRejected are required.
if isreceivingbycount is false then I want to mark AmountAccepted, AmountCurrency, AmountRejected as required 

can anyone help me to write a JS code for this in servicenow actions.
NOTE: I am using SOAP API in this action 
Thanks in advance 

[Ankur Bawiskar]

@Vrashikesh 

you need to parse and get value for each tag and validate it

you can use SOAP parser

what did you start with and where are you stuck?