Nested IFs in a table cell issue

[ArtVS]

Hi, everyone! I have the following nested IF statement in a table cell my template:
{IF $parameter.isMain == 0}{*ParameterName}{IF $parameter.unit != null}, {*ParameterUnit}{END-IF}{END-IF}{IF $parameter.isMain != 0}**{*ParameterName}{IF $parameter.unit != null}, {*ParameterUnit}{END-IF}**{END-IF}

It displays main parameter in bold and non-main parameters in regular, and should a parameter have a unit, it is displayed too.

Since version 11.5 the createReport function errors, saying nested IFs are not allowed. Is there a workaround other than rewriting without nested IFs? Or can someone add a fix for that issue in future versions, maybe?