Code:
<div align="left">#include <amxmodx></div></p><p><div align="left">#include <amxmisc></div></p><p><div align="left">#include <cstrike></div></p><p><div align="left">#include <fun></div></p><p></p><p><div align="left">#define PLUGIN "Custom F.U.N Plugin"</div></p><p><div align="left">#define VERSION "1.0"</div></p><p><div align="left">#define AUTHOR "Styles"</div></p><p></p><p></p><p><div align="left">public plugin_init() {</div></p><p><div align="left"> register_plugin(PLUGIN, VERSION, AUTHOR)</div></p><p><div align="left"> register_event("CurWeapon", "Event_CurWeapon", "be", "1=1")</div></p><p></p><p><div align="left">}</div></p><p></p><p><div align="left">public Event_CurWeapon(id) </div></p><p><div align="left">{</div></p><p><div align="left"> if(CSW_KNIFE)</div></p><p><div align="left"> {</div></p><p><div align="left"> set_user_maxspeed(id,700.0);</div></p><p><div align="left"> set_hudmessage(255, 170, 0, -1.0, 0.32, 0, 6.0, 12.0);</div></p><p><div align="left"> show_hudmessage(id, "--> You know can go faster <--");</div></p><p><div align="left"> return PLUGIN_CONTINUE;</div></p><p><div align="left"> }</div></p><p><div align="left"> else</div></p><p><div align="left"> {</div></p><p><div align="left"> set_user_maxspeed(id,oldspeed[id]);</div></p><p><div align="left"> set_hudmessage(255, 170, 0, -1.0, 0.32, 0, 6.0, 12.0);</div></p><p><div align="left"> show_hudmessage(id, "--> Your speed is now over <--");</div></p><p><div align="left"> return PLUGIN_CONTINUE;</div></p><p><div align="left"> }</div></p><p><div align="left">}</div>
try it like that
__________________