Question: Maple INTPUT PROBLEM URGENT

I have installed Maple 11 and activated it. Everthing seems to be ok but i can't evaluate what i enter,  in worksheet and Maple input mode  (it suprisingly automatically set to text ) i enter i.e

. x=3;

writes

x=3                 (1)

but when i enter

x+4; it

still writes

x+4                   (2)

i want maple to write evaluated expression 

7                                     (2) 

Basically is there a installation problem or  which mode should i use to evaluate things just like in classic worksheet. ? Because i have no problems in classic worksheet

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