How to pass parameters in user defined function in applyBound​aryConditi​on()?

What I want to do:

Create a time dependent geometry changing at every iteration, mesh it, solve a pde with time dependent boundary condtions and repeat

What I tried:

Method 1:

1. initialize
2. for t = 0:delta_t:t_final:
3. update geometry by geometryFromMesh(..)
4. generateMesh
5. apply boundary condtion
6. condtion is parameter dependent, can't pass my parameter in my custom function in thermalBC(model, Face, --, HeatFlux, @externalHeatFlux) (thermalBC is similar to applyBoundaryCondition)
7. solve pde for single instance
8. repeat

Q1. How can I pass a parameter in my function @externalHeatFlux to be used in thermalBC(model, Face, --, HeatFlux, @externalHeatFlux)?

Essentially I want to pass the parameter 'time' because the heat source is time dependent. But you can say state.time is automatically passed in this function (explained in documentation of thermalBC)

I don't want to go this way because:

Method 2:

1. Initialize, make geometry, mesh, applyBC using state.time as passed default
2. set tlist = [0:delta_t:t_final)
3. then later use solve(thermalmodel, tlist)
4. can't change the geometry! Because solve(..) solves for whole duration considering same geometry.

Q2. Can I update geometry somehow so that I solve the pde step by step, not in one shot like solve(model, tlist). This method inherently assumes that geometry will be the same.

I am confused between using solve(model, t_list) to solve for all time instance, and using changing geometry with simple loops.

I would personally prefer a solution helping in method 1 because that looks more systematic and clean. Someone working with pdes can look into it and help! I would be grateful.

Thanks in advance.