[OpenLayers-Users] How to refresh layer vector?

[dedoki]

Hello! How to refresh layer vector?
Trying:
_function refreshAllLayers() {__
__    lineLayer.refresh( { force: true } );__
__    lineLayer_halo.refresh( { force: true } );__
__}_
...
_<button onclick="javascript: refreshAllLayers()">Refresh</button>_

But nothing changes.
Thanks for answer.
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