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Thanks for the answer. $\tilde f$ should be a function defined on space $D([0,T];R^d)$? Then, the problem is: $f$ is bounded continuous on $R^d$, is it true that $\tilde f(\omega,t):=f(\omega_t)=f(X_t(\omega))$ is bounded an continuous on $D([0,T];R^d)\times[0,T]$?