zoom and center with Kml layer

Hi,
When i set a kmllayer url , the zoom value and center point are ignored/overwritten .
I add a look over internet and found that there is several workaround but i could'nt make it work !!
Anyone has already done it ?
Thanks
When i set a kmllayer url , the zoom value and center point are ignored/overwritten .
I add a look over internet and found that there is several workaround but i could'nt make it work !!
Anyone has already done it ?
Thanks