I've tried it and it doens't work,

The code is placed in my post.cshtml:

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage
@{
Layout = "Master.cshtml";
}
<div class="container">
<div class="row">
    <!--Left side---->
    <div class="col-lg-8 col-md-8 col-sm-12">
        <!--Breadcrumb-->
        @Umbraco.RenderMacro("Breadcrumb")
        <div class="post-container">
            <div class="post-information">
                <h1 class="post-name">@CurrentPage.Name</h1>
                <h4 class="post-date">@CurrentPage.CreateDate.ToString("dd. MMMM yyyy, H:mm") | Skrevet af: <span class="author">@CurrentPage.WriterName</span></h4>
            </div>
            <div class="post-image">
                <img src="@CurrentPage.GetPropertyValue("image")" />
            </div>
            @if (CurrentPage.HasValue("imageCaption"))
            {
                <h5 class="post-image-caption">
                    @CurrentPage.GetPropertyValue("imageCaption")
                </h5>
            }
            @if (@CurrentPage.HasValue("teaser"))
            {
                <h3 class="post-teaser">
                    @CurrentPage.GetPropertyValue("teaser")
                </h3>
            }
            <div class="post-text">
                @Umbraco.Field("bodyText", removeParagraphTags: true)
            </div>
            <div class="social-sharing">
                <h6>Del - vælg din platform</h6>
                <div class="social-icons">
                    <ul class="share-buttons">
                        <li><a href="https://www.facebook.com/sharer/sharer.php?u=http%3A%2F%2F + @Model.Content.UrlWithDomain()" target="_blank" title="Share on Facebook" onclick="window.open('https://www.facebook.com/sharer/sharer.php?u=' + encodeURIComponent(document.URL) + '&t=' + encodeURIComponent(document.URL)); return false;"><i class="fa fa-facebook-square fa-2x"></i></a></li>
                        <li><a href="https://twitter.com/intent/tweet?source=http%3A%2F%2F + @Model.Content.UrlWithDomain()" target="_blank" title="Tweet" onclick="window.open('https://twitter.com/intent/tweet?text=' + encodeURIComponent(document.title) + ':%20' + encodeURIComponent(document.URL)); return false;"><i class="fa fa-twitter-square fa-2x"></i></a></li>
                        <li><a href="https://plus.google.com/share?url=http%3A%2F%2F + @Model.Content.UrlWithDomain()" target="_blank" title="Share on Google+" onclick="window.open('https://plus.google.com/share?url=' + encodeURIComponent(document.URL)); return false;"><i class="fa fa-google-plus-square fa-2x"></i></a></li>
                        <li><a href="http://www.linkedin.com/shareArticle?mini=true&url=http%3A%2F%2F + @Model.Content.UrlWithDomain()" target="_blank" title="Share on LinkedIn" onclick="window.open('http://www.linkedin.com/shareArticle?mini=true&url=' + encodeURIComponent(document.URL) + '&title=' +  encodeURIComponent(document.title)); return false;"><i class="fa fa-linkedin-square fa-2x"></i></a></li>
                    </ul>
                </div>
            </div>
        </div>
    </div>
    <!--Right side-->
    <div class="col-lg-4 col-md-4 col-sm-12">
        <aside>
            <!--Join us--->
            <a class="btn btn-second page-scroll" href="#kontakt">Tilslut os</a>
            <hr />
            <!--Facebook--->
            <div class="fb-page" data-href="@(CurrentPage.GetPropertyValue<String>("facebookPageURL"))" data-tabs="timeline" data-small-header="true" data-adapt-container-width="true" data-hide-cover="true" data-show-facepile="true"></div>
        </aside>
    </div>
</div>

It's a template I use for the specific page for my project and news page

I made the property on the home node

Yes of course:

Content tree:

Level 1: Home Level 2: About us Level 2: News Level 3: Post Level 2: Projects Level 3: Post

Hi Ben,

Sorry for the late replay, but your solution worked! Thank you!