I need to update the variable cost only in MM03 standered cost vprs.

my clint requirement

we have 4 plants in company code.

one plant was manufactured the the goods and tranfer to the other plant , example plant 101 is a mfg plant having bom and routing for the meterial . the other plat 102 dont have bom and routing .

but when iam doing the cost run.for the plant 102 the same cost componet structure is hiitting for the 101plant in the T.code ck13.

the standered cost includes Fixed cost + variable cost is diaplying for 102 plant . now clint wants to hit only the varible cost it hit meterial master standered price the should hit in the VPRS condition type in the sales order .

inthe MM03 who will update the standered cost ?

what is the procedure to get the fixed cost only or variable cost in the t.code ck13.

please help me

subhash