How to change using namespaces in multi-project vstemplate

Question

I'm creating a custom vstemplate. Every thing is ok and all projects are created successfully with new name. But using namespaces didn't chane to new name .For example , my new project name is SampleWebApi but using namespace is still default namespace. Here is my main .vstemplate

<VSTemplate Version="3.0.0"
    xmlns="http://schemas.microsoft.com/developer/vstemplate/2005" Type="ProjectGroup">
    <TemplateData>
        <Name>Crm365 Web Api</Name>
        <Description>Api Template for dynamic crm 365</Description>
        <ProjectType>CSharp</ProjectType>
        <ProjectSubType>
        </ProjectSubType>
        <SortOrder>1000</SortOrder>
        <CreateNewFolder>true</CreateNewFolder>
        <DefaultName>Crm Web Api</DefaultName>
        <ProvideDefaultName>true</ProvideDefaultName>
        <LocationField>Enabled</LocationField>
        <EnableLocationBrowseButton>true</EnableLocationBrowseButton>
        <CreateInPlace>true</CreateInPlace>
        <Icon>__TemplateIcon.ico</Icon>
    </TemplateData>
    <TemplateContent>
        <ProjectCollection>
            <ProjectTemplateLink ProjectName="$projectname$.Common" CopyParameters="true">
                ProjectWebApi.Common\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$projectname$.Application" CopyParameters="true">
                Project.Application\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$projectname$.Domain" CopyParameters="true">
                Project.Domain\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$projectname$.Infrastructure" CopyParameters="true">
                Project.Infrastructure\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$projectname$.Persistance" CopyParameters="true">
                Project.Persistance\MyTemplate.vstemplate
            </ProjectTemplateLink>
            <ProjectTemplateLink ProjectName="$projectname$" CopyParameters="true">
                ProjectWebApi\MyTemplate.vstemplate
            </ProjectTemplateLink>
        </ProjectCollection>
    </TemplateContent>
</VSTemplate>

Any Help ?

I spent a lot of time reading Microsoft documentation about how to create custom vstemplate and i tried several ways. but I couldn't find my answer