Kahler and superpotential of a supergravity model have to satisfy to produce a viable phenomenology at the Tev scale so that there is no flat direction in the model and the effective vacuum energy at the low energy is tiny and positive which is compatible to the present day observation?

Adapting the technique proposed in [@KKLT] an additional moduli field is incorporated in both the superpotential and the Kähler potential. As can be seen latter, this extra moduli field is crucial in producing small vacuum energy, once susy is broken at the hidden sector. A small vacuum energy at the minimum and viable susy breaking terms at the observable sector restrict the choice of the Kähler and the superpotential. The order of magnitude of the gravitino mass and the soft susy breaking parameters namely the soft scalar mass, and the coefficient of the trilinear and the bilinear terms are estimated. This set-up is later illustrated with a toy model.

In section (1.1) of this article a brief review of [@KKLT] is presented. In section (2) an extension of the same has been suggested. Section (3) provides the extremization condition for the scalar potential. Section (4) deals with the estimation of 