How to introduce simple integral in dynare

Hi. I want to introduce integral in dynare. The integral I want is attached below (as a picture).

The idea is simple:
The composite consumption good ct is a bundle of varieties s of differentiated goods cst of measure one

How to introduce this simple integral in dynare?


Further to my question. I use Dixit-Stiglitz aggregator where α is a parameter (elasticity of substitution between varieties)

After optimization, there, normally, shouldn’t be an integral anymore, since you put optimality conditions (ie FOC’s) into Dynare. Or what exactly are you trying to do?
Dynare in itself cannot solve integrals for you.