Using latitude longitude in shortcode

Hi,

I saw 2 old posts with the same query, but unfortunately there was no solution posted, so I am raising the query again:

i want to use latitude and longitude to fetch the weather. On using lat & long in this code, it does not work –

[forecast location="30.27, 79.25" caption="" measurement='C' todaylabel="Weather" datelabel="date('d/m/Y')" highlow='%%high%%°/%%low%%°' numdays="1" iconset="Simple" class="css_table_class" cache="false" width="100%"]

thanks

http://ww.wp.xz.cn/extend/plugins/wunderground/