How can I validate if I am an administrator user to show a button
example in detailviewdefs
<?php
$viewdefs['Accounts']['DetailView']['templateMeta']['form']['buttons'][999] =
array (
'customCode' => '{if $ISADMIN == 1}<form action="/index.php?module=Accounts&action=entityid&id={$bean->id}" method="POST" name="CustomFormEntityID" id="formEntityID">
<input title="Edit entity id" class="button" type="submit" value="Edit Entity ID">
</form>{/if}'
);