I'm trying to use the mesh from the realsense camera in my .urdf.xacro file and getting name 'd435_cam_height' is not defined or similar.

This is a MWE to show the issue:

<?xml version="1.0" ?>
<robot name="test" xmlns:xacro="http://www.ros.org/wiki/xacro">

    <!-- sensors -->
    <xacro:include filename="$(find realsense2_camera)/urdf/_d435.urdf.xacro"/>
    <xacro:sensor_d435 parent="base_link">
        <origin xyz="0 ${(0.355-d435_cam_height)/2} 0.0445" rpy="0 0 ${pi/2}"/>
    </xacro:sensor_d435>

    <link name="base_link">
        <visual>
            <geometry>
                <box size="0.483 0.355 0.089"/>
            </geometry>
            <origin xyz="0 0 0"/>
        </visual>
        <collision>
            <geometry>
                <box size="0.483 0.355 0.089"/>
            </geometry>
            <origin xyz="0 0 0"/>
        </collision>
        <intertial>
            <mass value="7"/>
            <inertia ixx="0.0781351666667" ixy="0" ixz="0" iyy="0.140705833333" iyz="0" izz="0.140705833333"/>
        </intertial>
    </link>
</robot>

They define the property I'm trying to use with the following snippet:

<?xml version="1.0"?>
<robot name="sensor_d435" xmlns:xacro="http://ros.org/wiki/xacro">
    <xacro:macro name="sensor_d435" params="parent *origin">

        ...

        <xacro:property name="d435_cam_height" value="0.025"/>

        ...

        <!-- camera body, with origin at bottom screw mount -->
        <joint name="camera_joint" type="fixed">
            <xacro:insert_block name="origin" />
            <parent link="${parent}"/>
            <child link="camera_link" />
        </joint>

        ...

    </xacro:macro>
</robot>

Is it not possible to use properties defined inside a macro in another xacro file? I tried with namespaces, I tried to search for similar questions and I did the tutorial and looked for similar robots with no luck. Of course using 0.025 directly solves the issue, it's beside the point of using properties then.