library link and library element modification in simulink (dspace and simulink involved)

When accessing Task Configuration under RTI simulation options in my simulations configuration parameters in Simulink, I get the following problem:

from RTI, model initialization failed.

RTI task configuration failed with message:

パラメーター 'Gain' ('zmp_ac_ver1/ControllerLogic/Controller/PID/Kd[A.s//rad]' 内) の評価中のエラー

パラメーター 'Gain' ('zmp_ac_ver1/Plant/Motor/PID_current/Kd_curr' 内) の評価中のエラー

パラメーター 'Gain' is parameter 'Gain' and 内) の評価中のエラー is something like inner value (evaluation?) error.

What I understood is that it might be caused by whats written in the warning i get when I open the simulation mdl file:

Warning: zmp_ac_ver1.mdl, 3809 行目: "zmp_ac_ver1/Plant/Motor/PID_current/Discrete Derivative"
は、パラメーター付きのリンクです。このリンクへの変更内容の表示、破棄、伝播を行うには、[ライブラリ リンク] のメニュー項目を使用してください 
In general\private\openmdl at 13 
In open at 159
In uiopen at 196

I found it is the English "Warning: Overriding parameters of '.../Discrete Derivative"' which is inside a library link. These changes can be changed, propagated, or viewed using the 'Link Options' menu item." so i checked for those changes

How do I allow them? Do I understand correctly that Gain cannot be obtained without these changes?