mod_cpsearch problem with Search by Date Range

I understand, but in my case we do not have end publishing date. How can we search by date range and for example if we want to find all articles created betweeen July 2010 and March 2013, how can we do this with the current mod_cpsearch ?

Custom Properties for J1.5 does not support the search mode you'd like to use. From a technical point of view, because no active development is taking place on this version of CP, there's only one option: upgrade to J2.5 and upgrade Custom Properties too.

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