Dear CP2K Community, I am currently learning how to use metadynamics in CP2K, and I have encountered an issue that I hope you can help me with. I would like to select the z-coordinate of a specific atom as a collective variable during the metadynamics process, and restrict its movement within a certain range along the z-axis. I want to ensure that the z-coordinate of this atom is only sampled within the specified range. Could you please advise me on which keywords or settings to use in the <a>CP2K input file</a> to achieve this?Thanks in advance for your help! Best regards -- You received this message because you are subscribed to the Google Groups "cp2k" group. To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:cp2k+unsubscribe@googlegroups.com">cp2k+unsubscribe@googlegroups.com</a>. To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/cp2k/6fadd874-b4c0-4682-bdc0-c00d5cfa57f4n%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/cp2k/6fadd874-b4c0-4682-bdc0-c00d5cfa57f4n%40googlegroups.com</a>.