Google Map Variants

I can't get Google Physical Map and Google Street Map varients to appear as baselayers... I've tried a number of combinations...
I have the baselayer_options_separator = "|"

[map baselayers="google,yahoo" zoom="4" /] // this only shows google and yahoo default baselayers
[map baselayers="google|physical,yahoo" zoom="4" /] // doesn't work
[map baselayers="google|google - physical,yahoo" zoom="4" /] // doesn't work

I was looking at the code in openlayers.mapclient.inc, specifically the get_baselayers function, and I'm uncertain how to format my baselayers string for physical, streets, etc. to parse correctly. I did a quick hack and got them working, but I messed up the $baselayers[$i]['baselayer_options'] string... I pasted what I believe is the relevant code below...

  foreach($baselayers_arr as $baselayer_info) {
    $tmp = explode($baselayer_options_separator, $baselayer_info);
    $baselayer_variant = $tmp[0];
    $baselayer_options = (count($tmp) > 1) ? array_splice($tmp, 1) : array();
    $tmp = explode('-', $baselayer_variant);
    $baselayer_vendor = $tmp[0];
    $variant = (count($tmp) > 1) ? strtolower($tmp[1]) : 'default';
    $baselayers[$i]['baselayer_vendor'] = $baselayer_vendor;
    $baselayers[$i]['variant'] = $variant;
    $baselayers[$i]['baselayer_options'] = get_baselayer_options($baselayer_options);
    $i++;
  }

Please help!