In mapchooser.sp
line 129, remove max value from cvar
Code:
g_Cvar_IncludeMaps = CreateConVar("sm_mapvote_include", "5", "Specifies how many maps to include in the vote.", _, true, 2.0, false, 6.0);
Then you need change mapchooser config
...cfg/sourcemod/mapchooser.cfg
Code:
// Specifies how many past maps to exclude from the vote.
// -
// Default: "5"
// Minimum: "0.000000"
sm_mapvote_exclude "0"
// Specifies how many maps to include in the vote.
// -
// Default: "5"
// Minimum: "2.000000"
// Maximum: "6.000000"
sm_mapvote_include "20"