Getting 'BinaryExpression not expected here' when bound expression is {{pageSubRoute.add-edit-jobs}}

[mercmobily]

I have this in my-app.html:

        <my-add-edit-jobs state="{{state}}" route="{{pageSubRoute.add-edit-jobs}}" name="add-edit-jobs"></my-add-edit-jobs>

But polymer lint tells me:

src/my-app.html(226,57) warning [invalid-polymer-expression] - Only simple syntax is supported in Polymer databinding expressions. BinaryExpression not expected here.

Because of naming conventions, I can't rename add-edit-jobs without giving me a headache.
BTW, I need this for this hack around app-route.

Note that {{pageSubRoute.add-edit-jobs}} is a valid expression for Polymer in data binding (that is, the add-edit-jobs key in this.pageSubRoute.

[stale]

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