how to change the Rotating speed of "rotate_recovery" in move_base

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I am sorry to bother you, I found how to modify the speed of "rotate_recovery" myself .It is a file called “rotate_recovery.cpp” in “navigation-indigo-devel/rotate_recovery/src” (ubuntu 14.04 indigo ). There are some params in this cpp：

blp_nh.param("acc_lim_th", acc_lim_th_, 3.2);
blp_nh.param("max_rotational_vel", max_rotational_vel_, 1.0);
blp_nh.param("min_in_place_rotational_vel", min_rotational_vel_, 0.4);

We can change the rotation speed by modifying these parameters. :-)