laplace transformation for array

hello every one

I try to do laplace transformation for this array

M = [exp(x) 1; sin(y) i*z];

i do "laplace(M)" but the answer is not correct

I read the help

"syms a b c d w x y z

M = [exp(x) 1; sin(y) i*z];

vars = [w x; y z];

transVars = [a b; c d];

laplace(M,vars,transVars)" but I get error

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??? Error using ==> sym.maple at 87

Error, (in laplace) invalid input: laplace expects its 2nd argument, t, to be of type name, but

received array(1 .. 2, 1 .. 2,[(1, 1)=w,(2, 1)=y,(1, 2)=x,(2, 2)=z])

Error in ==> sym.laplace at 79

L = maple('map','laplace',F,t,s);

Error in ==> laplace at 5

laplace(M,vars,transVars)

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please help me