Currently I am able to send the Header in the Soap request in 2 ways as shown below:

1st way

<env:Header>

            <Security xmlns ="http://schemas.xmlsoap.org/ws/2003/06/secext">

                        <UsernameToken>

                                    <Username>abcde</Username>

                                    <Password>abc123</Password>            (Password here is simple xsd:string type)

                        </UsernameToken>

            </ Security>

</env:Header>

And like this:

2nd way

<env:Header>

            <Security xmlns ="http://schemas.xmlsoap.org/ws/2003/06/secext">

                        <UsernameToken>

                                    <Username>abcde</Username>

                                    <Password Type=”PasswordText” />

                        </UsernameToken>

            </ Security>

</env:Header>

But this is the header that I require (marked in Red):

<env:Header>

            <Security xmlns ="http://schemas.xmlsoap.org/ws/2003/06/secext" soapenv:mustUnderstand="1">

                        <UsernameToken>

                                    <Username>abcde</Username>

                                    <Password Type= “PasswordText”>abc123</Password>

                        </UsernameToken>

            </ Security>

</env:Header>

What I am unable to create 2 things as shown above:

1. I can send either password type or password value, but not both together.
2. I cannot add soapenv:mustUnderstand="1" in Security tag.

Is there way to achieve it by making modification in the Apex class or any other way?

Thank you.