st: ML estimation

["marcel spijkerman" <marcel_spijkerman@hotmail.com>]

Dear stata-users,


I want to estimate by ML a model with two equations. The structure of the 
program is as follows:


program define hshazll2

	version 8.2

	args todo b lnf


	tempvar I1 I2 h1 h2 sum1 sum2 ST1 ST2 last lnfi


		mleval `I1' = `b'
		mleval `I2' = `b' eq(2)

.....
.....
.....


end


When I call the program with the following line:

ml model d0 hshazll (I1: y1 = x1 x2) (I2: y2 = x3 x4)

and continue with a check:

ml check


I get the message "no varlist allowed"

In the MLE  book by Gould I find similar examples that seem to work. What is 
wrong here?


Regards,

Marcel Spijkerman


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