It may be icky, but it's still OK. Mix some dry browns into it. Maggots won't hurt anything in your compost.
Bill Hill

Here is a link that might be useful: Gardendweb compost forum

Because maggots, the larva of many fly species, need a pretty moist envirnoment to hatch ahd grow in the presence of them in your compost is an indication that the compost is too wet. As Bill has suggested mix in some dryer material to soak up the excess moisture and the maggots will die. While maggots will not hurt compost they really do no good either.

You are both absolutely right. It started when frequent got the compost too wet.
I will get some dry soil and incorporate it into the present mix.

Thanks much-ly for help

Mineral soil would not be good to use. It will not decompose and will only dilute your compost, make it heavy, and the mineral content will never decompose. The dry material needed could be shredded paper including newsprint, cardboard, wheat straw, brown leaves, and many other things considered "browns".

Here is a link that might be useful: Compost guide

Many years ago it was standard practice to cover each 8 inch layer of a compost pile (6 inches of vegetative waste and 2 inches of manure) with 1/8 inch of soil, and Sir Albert Howard thought that a necessary practice to introduce the bacteria that would be digesting the material. Putting dry soil on top of your compost could act as a dessicant and suck the life out of, or it could smother, the maggots but it will do no harm to the compost.

The presence of flies (as indicated by maggots) may be a precursor to rotting and odorous material. i agree with previous posters that adding some brown matter and turning over the compost heap may help. Here's a link to a basic article about assembling and maintaining a compost heap.

Here is a link that might be useful: composting