I am trying to use a look behind to protect a parameter in an xml file. When I try to add the regex to the embedded content processing, nothing changes for the file filtering. I want to protect the entire parameter value as it is not to be translated and we've run into issues when it is fully exposed. I am looking for ideas for how I can leverage the xml filter while protecting these parameters from translation.

Regex:

(?<=[\n\s>])(\w+?<sub>.+?<\/sub>?)

Example text to be converted to inline placeholder:

t_PLMT   -->   {1}

Sample xml:

        <section id="SECTION" ishcondition="legacy=filter3">
            <p id="GUID">The period of internal pulse generator
                    (t<sub>PLMT</sub>) is set by the C<sub>PLMT</sub> capacitor. The period,
                    t<sub>PLMT</sub> defines the minimum repetition rate of LED current pulses
                allowed based on external UDIM signal and is set based on the maximum PWM frequency,
                    f<sub>PWM(MAX)</sub>. An additional margin in design is necessary to compensate
                for the component tolerances and noise in the system. The t<sub>PLMT</sub> period is
                determined using <xref href="GUID" />.</p>
		</section>

<section id="SECTION" ishcondition="legacy=filter3">
<p id="GUID">The period of internal pulse generator
(t_PLMT) is set by the C_PLMT capacitor. The period,
t_PLMT defines the minimum repetition rate of LED current pulses
allowed based on external UDIM signal and is set based on the maximum PWM frequency,
f_PWM(MAX). An additional margin in design is necessary to compensate
for the component tolerances and noise in the system. The t_PLMT period is
determined using <xref href="GUID" />.</p>
</section>